Xiao Ming and Xiao Gang are 25 years old, and four years later, Xiao Ming is three years older than

Hello, four years later, Xiao Ming is three years older than Xiao Gang, it can be considered that Xiao Ming is three years older than Xiao Gang every year, then four years later, Xiao Ming Xiao Gang is 25 + 4 2 = 33 years old.

Four years later, Xiao Ming is three years older than Xiao Gang, which means that Xiao Ming is now 3 years older than Xiao Gang, so if Xiao Gang is now x years old, then Xiao Ming (x+3) years old.

Know according to the title.

x+x+3=25

2x=25-3

2x=22x=11

So, now Xiao Gang is 11 years old and Xiao Ming is 14 years old.

Four years later, Xiao Gang was 15 years old and Xiao Ming was 18 years old.

Xiao Gang and Xiao Ming have a total of 15 + 18 = 33 (years old).

This year, the two are twenty-five years old, and four years later, the two are each four years older, and the two have increased their age by a total of eight years, so the answer is thirty-three years old, and it has nothing to do with how much Xiao Ming fights compared to Xiao Gang.

Xiao Ming and Xiao Gang are 25 years old, and they are 4 years older in the next four years, and the two have a total of 25 plus 4 plus 4 equals 33 years old. Xiao Ming is 3 years older than Xiao Gang, that is, Xiao Ming is the same age when he is 3 years old. （33-3）/2＝15。Xiao Gang is 15 years old and Xiao Ming is 18 years old.

I don't know what age you are now, and whether you can use a system of binary equations or a system of unary equations;

First of all, Xiao Ming is 3 years older than Xiao Gang, no matter how old the age difference between the two of them remains the same after a few years;

Assuming that Xiao Ming is x years old, Xiao Gang is (x-3) years old;

x+x-3=25 can be calculated as x=14, that is, Xiao Ming is 14 years old and Xiao Gang is 11 years old. (when total 25 years old);

If it is 4 years later, it will be 18 and 15 years old;

Xiao Ming and Xiao Gang are 25 years old this year, and four years later, they will be 25 + 4 2 = 33 years old.

Solution, we must first understand that no matter how many years later, Xiao Ming has always been three years older than Xiao Gang. There is a meaning from the title.

Xiao Ming (this year) + Xiao Gang (this year) = 25

Four years later, it was.

Xiao Ming +4) + (Xiao Gang +4) = 25 + 8 = 33 years old.

A: Four years later, Xiao Ming and Xiao Gang will be 33 years old. Hope!

25+4x2 25 8 33 years old, A: Xiao Ming and Xiao Gang are 33 years old.

Four years ago, the sum of the ages of the two was 25 years old, then after four years, they each grew by four years, and the sum of the ages of the two should be 8 years old, so the sum of the ages after four years is 25 + 8 = 33 years old.

Four years later, Xiao Ming and Xiao Gang are each four years older, so the sum of their ages is 25 + 4 + 4 = 33 years old.

If I'm not mistaken, your question should be how old Xiao Ming and Xiao Gang are, not how old they are.

Whether it is now or four years later, Xiao Ming is always three years older than Xiao Gang.

Assuming that Xiao Gang is the same age as Xiao Ming, then their age sum is 25 + 3 = 28 (years). 28 is equivalent to the age of two Xiao Ming.

Use 28 2 = 14 years old to find Xiao Ming's age.

Then use 25-14=11 years old, and find Xiaogang's age.

Four years later, Xiao Ming is x years old, and Xiao Gang is y years old.

x-y=3x-4+y-4=x+y-8=252x-8=25+3=28

2x=36x=18

y=18-3=15

18 + 15 = 33 (years).

Xiao Ming and Xiao Gang are 33 years old.

25 + 4 + 4 = 33 (years).

A: Four years later, Xiao Ming and Xiao Gang will be 33 years old.

Hope it helps.

1. It has been said in the title that "Xiao Ming and Xiao Gang are 25 years old in total".

2. "Xiao Ming is three years older than Xiao Gang" This condition is redundant.

3. Four years later, Xiao Ming and Xiao Gang are together.

25 + 4 2 = 33 years old.

Solution: From the meaning of the question: Four years later, Xiao Ming and Xiao Gang are 25 + 4x2 = 33 years old.

Solution: 25+4x2

33 (years old.

A: Xiao Ming and Xiao Gang are both 33 years old.

Now Xiao Gang's age: (25-3) 2 11, and Xiao Ming's age now: 11+3 14.

After 4 years, it would be nice to add 4 years to each person.

The age difference is the same.

22 2 = 11 years old.

11 + 3 = 14 years old.

Xiao Ming is 14 years old and Xiao Gang is 11 years old.

Set: Xiao Ming's age this year is x years old, and Xiao Jun's age this year is x-3 years old.

Solution: x+(x-3)=25

2x-3=25

2x=28x=14

A: Xiao Ming is 14 years old this year, and Xiao Jun is 11 years old this year.

The age difference between Xiao Ming and Xiao Jun is the same, six years ago, Xiao Ming was three years older than Xiao Jun; This year, Xiao Ming is 3 years older than Xiao Jun.

Now it is known that Xiao Ming is 3 years older than Xiao Jun, and the sum of the ages of Xiao Ming and Xiao Jun is 25 years old, which is a sum problem, in the difference multiple problem, find the smaller number = (sum difference) 2 and the larger number = (sum difference) 2

So Xiaojun's age: (25-3) 2=11 years old.

Xiao Ming's age: (25 3) 2=14 years old.

Xiao Ming is 14 years old and Xiao Jun is 11 years old.

Xiao Ming is a few years older than Xiao Jun, and he will not change. Six years ago, Xiao Ming was 3 years older than Xiao Jun, which actually meant - Xiao Ming was 3 years older than Xiao Jun.

So, there are two ways to do this question:

The first, (25+3) 2=14 (years), which is Xiao Ming's age this year, and Xiao Jun's is 25-14=11 (years).

The second type, (25-3) 2=11 (years), which is Xiaojun's age this year, and Xiaoming's age is 11+3=14 (years).

So, Xiao Ming is 14 years old this year, and Xiao Jun is 11 years old this year.

The age difference is constant. 6 years ago, Xiao Ming was 3 years older than Xiao Jun, and today, he is still 3 years older than Xiao Jun. So Xiao Jun is (25-3) 2=11 years old this year, and Xiao Ming is (25+3) 2=14 years old.

Answer: Six years ago, Xiao Ming was 3 years older than Xiao Jun, and now Xiao Ming is still 3 years older than Xiao Jun, if it is assumed that Xiao Jun is a year old, then Xiao Ming is a + 3 years old, then there is:

a+a+3=25

2a=22a=11

Then a+3=14

So. Xiaojun is 11 years old and Xiaojun is 14 years old.

The age of the small army: (25-3) 2=11

Xiao Ming's age: 11+3=14

A: Xiao Jun is 11 years old and Xiao Ming is 14 years old.

Six years ago, he was 3 years older, and this year he is also 3 years older, and he is 25, minus these 3 years old, the two people are the same age, 25-3 22, so Xiaojun's age is 22 2 11 years old, and Xiao Ming's age is 11+3 14 years old.

6 years ago, I was 3 years older, so now I am 3 years older! So it's calculated like this: (25+3) 2=14 years old, Xiao Ming is 14 years old this year; (25-3) 2=11 years old, Xiaojun is 11 years old this year.

Six years ago, Xiao Ming was three years older than Xiao Jun, so this year Xiao Ming is still three years older than Xiao Jun. So 25-3=22,22 2=11,11+3=14, Xiao Ming is 14 years old, and Xiao Jun is 11 years old.

Let Xiao Ming be x years old this year and Xiao Jun be y years old this year, and the equation can be listed: x y 25, x-6-3=y-6, and calculate x = 14, y = 11, so Xiao Ming is 14 years old this year, and Xiao Jun is 11 years old this year.

The age difference remains the same, three years ago and now. So Xiao Ming (25+3) 2=14 years old.

Design: Xiaojun is a year old this year.

a+(a+3)=25

2a=25-3

2a = 22a = 11 years old.

11 + 3 = 14 years old.

Xiao Jun is 11 years old this year, and Xiao Ming is 14 years old.

Suppose Xiao Ming is x, and Xiao Jun is x+3

x+x+3=25

2x=22x=11

Xiao Ming is 11 years old and Xiao Jun is 14 years old.

Solution: (25-3) 2 22 2 11 (years).

11 + 3 = 14 years old.

A: Xiao Ming is 14 years old and Xiao Jun is 11 years old.

Solution: By known conditions can be used to know the cavity of the grip, their age and minus 3. It is 1+2 3 times that of Xiaogang's middle-aged age.

Therefore, Xiao Gang's age is equal to (28-3) (1+2 3)=25 5 3=25 3 5=5 3=15 (age of Pishan), and Xiao Ming's age is 28-15=13 (years old).

Summary. Xiao Ming's age is x years old, Xiao Hong's age is y years old, and Xiao Gang's age is z years old. According to the title, the following relationship can be obtained:

Xiao Ming is 2 years older than Xiao Hong: x = y + 2 Xiao Gang is 3 years younger than Xiao Hong: z = y - 3 Problems to be solved:

How old is Xiao Ming in 3 years: x + 3 How old is Xiao Gang 2 years ago: z - 2 Since there are only two equations, but there are three unknowns, it is impossible to find the values of x, y, and z exactly.

However, the relationship between x and z can be obtained from simultaneous equations. Represent the y in the first equation with the second equation: y = z + 3 to get the new equation:

x = z + 3 + 2 =>x = z + 5 The problem to be solved is represented by x and z: how old is Xiao Ming after 3 years: (z + 5) +3 = z + 8 How old was Xiao Gang 2 years ago:

Z-2 cannot be solved for a specific age because there are too many unknowns and there is no independent solution.

Xiao Ming is 2 years older than Xiao Hong, Xiao Gang is 3 years younger than Xiao Hong, how old is Xiao Ming 3 years later, and how old is Xiao Gang 2 years ago.

Xiao Ming's age is x years old, Xiao Hong's age is y years old, and Xiao Gang's age is z years old. According to the title, the following relationship can be obtained: Xiao Ming is 2 years older than Xiao Hong:

x = y + 2 Xiao Gang is 3 years younger than Xiao Hong: stool key z = y - 3 Problem to solve: How old is Xiao Ming in 3 years:

How old is x + 3 just 2 years ago: z - 2 Since there are only two equations, but there are three unknowns, it is impossible to find the exact values of x, y, and z. However, the relationship between x and z can be obtained from simultaneous equations.

Represent the y in the first equation with the second equation: y = z + 3 to get the new equation: x = z + 3 + 2 =>x = z + 5 x and z to represent the problem to be solved:

How old is Xiao Ming after 3 years: (z + 5) +3 = z + 8 How old was Xiao Gang 2 years ago: z - 2 Because there are too many unknowns, there is no independent solution, and the specific age cannot be solved.

Thank you, the teacher gave the answer.

Okay, that's okay.

Xiao Gang and Xiao Minghe are 22 years old this year, and he was 10 years old six years ago.

Equation according to the title:

This year: Xiao Gang + Xiao Ming = 22 years old.

Six years ago: Xiao Gang -6 + Xiao Ming -6 = Xiao Gang + Xiao Ming -6-6 = 22-12 = 10 years old.

So six years ago they were both 10 years old.

Algorithm of addition and subtraction:Integer addition and subtraction calculation, the same digits are aligned, from the single digit, the addition of dozens will be advanced to the higher one; When the subtraction is not enough, it will be subtracted from the higher digit by 1 when 10 and the original digit are added and then subtracted.

The subtraction of real numbers or cliffs is defined plus signed numbers. Specifically, the process of subtraction of a number by adding the negative number of another number. Then we have 3 = 3 + (by avoiding the introduction of "new" operators such as subtraction, which helps to keep the real numbers "simple").

3 years later, Xiao Ming is:

20 years old. Xiao Ming buried the present forest liquid imperial year is this rock: 20-3 = 17 years old.

Xiao Gang this year: 17-5 = 12 years old.

Summary. Hello, dear, set Xiao Ming's current age is x years old, and Xiao Gang's current age is x 3 years old. After a few years, Xiao Ming's age will be x+ years, and Xiao Gang's age will be x3+ years.

From the question, it can be seen that the relationship between how old they are is: x + years old = 3 (x 3 + years old) + 1. To put it simply:

x 3 = 2 years + 1, i.e. x = 6 years + 3. Bring X back to the original style, it can be concluded that Xiao Ming's current age is 6 years + 3 years old, and Xiao Gang's current age is 2 years + 1 year old.

Hello, dear, Xiao Ming's current age is x years old, and Xiao Gang's current age is x 3 years old. After a few years, Xiao Ming's age is x+ years old, and the age of Xiao Gangwu is x 3+ years. From the question, it can be seen how old they are in the relationship

x + years of age = 3 (x 3 + years of age) + 1. To simplify: x 3 = 2 years + 1, i.e. x = 6 years + 3.

Bring X back to the original style, it can be concluded that Xiao Ming's current age is 6 years + 3 years old, and Xiao Gang's current age is 2 years + 1 year old.

Summary. Xiao Ming is 4 years older than Xiao Cheng, and six years later, the age of the two is 28 years old.

Hello friend, I am Mr. Runhua. The question you asked, I've seen. Tachibana Kiyoshi I'll serve you right before the quarrel, and I need to sort out the answers. Please wait a minute. About three minutes. Be patient. Bumping the chain

Hello, according to your description, it can be calculated that Xiao Mi's age is 6 years old, and Xiao Chen's age is 10 years old. For this calculation method, select the following.

Merry Christmas to you. 