Mom is 42 years old and Xiao Ming is 12 years old. How old are the teenage mothers who are 3 times o

Solution: The age difference between Mom and Xiao Ming is 42-12 = 30 (years old), when Xiao Ming is 30 (3-1) = 15 (years old), that is, 15-12 = 3 years later, Mom's age is 3 times that of Xiao Ming.

A: In another 3 years, my mother's age will be 3 times that of Xiao Ming.

Solution: Let's say that in X years, my mother's age is 3 times that of Xiaoqiang.

The equation is listed by the question (42 x) (12+x)=3

Solve x = 3 Answer: In another three years, my mother's age will be 3 times that of Xiaoqiang.

Let the mother's age be 3 times that of Xiao Ming's age in the next year, then (42+x) (12+x)=3, and the solution is equal to 3, that is, the mother's age will be 3 times that of Xiao Ming in another 3 years.

Solution: In another X years, my mother's white age is 3 times that of Xiaoqiang.

12+x）×3=42+x

36+3x=42+x

3x-a-x = 42-36

2x=6x=6÷2

x=3A: In another 3 years, my mother's age will be 3 times that of Xiaoqiang.

42-12) (3-1) -12

30 2-12

15-123 years.

Answer: Slightly.

42+ =3(12+x) 42+x=36+3x x=3 In another 3 years, my mother's age is 3 times that of Xiaoqiang.

solution, and meet the conditions in x years.

3(12+x)=42+x

then 2x=6x=3

Suppose that the mother's age is 3 times that of Xiao Ming in x years, and the equation can be 42 x 3 (12+x), x 3, and after 3 years, the mother's age is 3 times that of Xiao Ming.

3 years. The analysis is as follows:

Column the equation, let the mother's age be 3 times that of Xiao Ming after x years.

3*(12+x)=42+x

36+3x=42+x

2x=6x=3

Hope it helps.

In another 3 years, my mother will be three times older than Xiao Ming. 42+3=45， 12+3=15，45=15×3。Hope.

Let's say that in x years, the mother's age is 3 times that of Xiao Ming, 42+x) 3=12+x

Solution: x=3 (years).

In another 3 years. Three-year-old mother is 45, and Xiao Ming is just three times as old as 15.

Mom is 42 years old this year, Xiao Ming is 12 years old this year, and in another 3 years, Mom's age is 3 times that of Xiao Ming.

Set the rule of x years. 42 ten x 3 (i2 ten x).

42 ten x 36 ten 3x

x 3 A: In another 3 years, my mother's age is 3 times that of Hao Xiaoqiang.

Don't be fooled, kids!

There is no answer to this question. Mother, Xiao Ming, Xiao Qiang, three people, the age relationship is uncertain.

Mom is 46 years old this year, Xiaoqiang is 12 years old this year, and in another 5 years, Mom's age is 3 times that of Xiaoqiang.

According to the title: Set: In another x years, the mother's age is 3 times that of Xiaoqiang.

Column equation: 46+x=3(12+x).

46+x=36+3x

46-36=3x-x

2x=10x=10÷2

x=5, so in another 5 years, my mother's age will be 3 times that of Xiaoqiang.

It can be set x years later, the mother's age is 3 times that of Xiao Ming, that is, Wang Yundong said, three times the 12 + x = 40 + x, that is, 36 plus three x = 40 x, that is, 4x is equal to 36, x is equal to nine, so after nine years, the mother's age is 3 times that of Xiao Ming.

<> such as the nuclear Xiang Annihilation Tu search.

Solution: According to the meaning of the question, it can be obtained:

The age difference between the two is: 38-11=27 (years).

From the difference multiple formula, it can be obtained:

27 (4-1) = 9 (years old)

Answer: Xiao Lead Mu Ming is 9 years old.

Solution: After X years, my mother's age is three times that of Xiaoqiang.

46+x=3（12+x）

Solution: x=5Answer: In another 5 years, my mother's age will be three times that of Xiaoqiang.

If x years are three times that of Xiaoqiang, then 46+x=3 (12+x) is solved x=5, that is, in another 5 years, the mother's age is three times that of Xiaoqiang.

Solution: In another X years, my mother's age will be three times that of Xiaoqiang.

46+x）=3×（12+x)

46+x=36+3x

3x-x=46-36

2x=10 A: In another 5 years, my mother's age will be 3 times that of Xiaoqiang.

Xiaoqiang's age this year +x) 3=Mother's age this year +x solution: Let the mother's age be three times that of Xiaoqiang in another x years.

12+x)×3=46+x

12×3+3x=46+x

36+3x=46+x

3x-x=46-36

2x=10x=10÷2

x=5A: In another 5 years, my mother's age will be three times that of Xiaoqiang.

Let's go another n years.

46+n=3*（12+n）

46+n=3n+36

2n=10n=5A: In another 5 years, my mother's age will be 3 times that of Xiaoqiang.

Solution: Let's say that in X years, my mother's age is 3 times that of Xiaoqiang.

After a few years, Mom's divided by Xiaoqiang a few years later 3 times.

46+x=3*（12+x）

46+x=3x+36

2x=10x=5A: In another 5 years, my mother's age will be 3 times that of Xiaoqiang.

Solution: In another X years, my mother's age will be three times that of Xiaoqiang.

12+x）x3=46+x

Solution: x=5

In another 5 years, my mother will be 51 and Xiaoqiang will say 17, so my mother's age is 3 times that of Xiaoqiang.

No matter how many years it takes, my mother is 3 times that of Xiaoqiang.

In another 5 years, my mother will be 51 years old and Xiaoqiang will be 17 years old.

Xiao Ming is 12 years old this year, then three years ago Xiao Ming was 12-3 = 9 years old, three years ago his mother's age was 4 times that of Xiao Ming, then three years ago his mother's age was 4 9 = 36 years old, three years ago his mother was 36 years old, then his mother's age this year is 36 + 3 = 39 years old! Hope it helps.

5 years, you can use the line segment method to explain to children, Xiao Ming's age after a few years is counted as a paragraph, and his mother's age after a few years is counted as three paragraphs.

Let my mother's age be 3 times that of Xiao Ming in x years, and the equation is as follows:

46 + x = 3 * 12 + x), solve the above equation, get x = 5, that is, in another 5 years, the mother's age is 3 times that of Xiao Ming.

Mother's age = 46, Xiao Ming's age = 12, and in x years, Mom is 3 times that of Xiao Ming.

46+x=（12+x）×3

Solve the equation: x=5

So, 5 years later, my mother is 51 years old, Xiao Ming is 17 years old, and my mother is 3 times that of Xiao Ming. Is it a typo? Or a brain teaser?

Tell your child that the essence of this question is that age grows together.

(42-12×3)÷(3-1)

3 (years) A: After 3 years, my mother's age is 3 times that of Xiao Ming.

Set X years later, my mother's age is 3 times that of Xiao Ming.

42+x=3(12+x)

x = 33 years later, the mother's age is 3 times that of Xiao Ming.

Three years later, it was 3 times that of Xiao Ming.

5 years. In the past 5 years, Xiaoqiang is 17 years old, his mother is 51 years old, and 17 is 3 times 51