Several math problems in the first year of junior high school are related to the opposite number of

-3|+|b+4|=0。Then a= b= is not |a-3|+|b+4|=0？

The absolute value is greater than or equal to 0, and the addition is equal to 0, if one is greater than 0, then the other is less than 0, which is not true, so both are equal to 0

So a-3 = 0 and b + 4 = 0

a=3,b=-4

If |x+3|+|2-y|+|z+5|=0, then x+y+z= x-y-z=

The same is true of the previous one.

x+3=0,2-y=0,-z+5=0

x=-3,y=2,x=5

x+y+z=-3+2+5=4

x-y-z=-3-2-5=-10

If |2x-4|+|5-y|=0, find |x-y|Value.

The same is true of the previous one.

2x-4=0,5-y=0

x=2,y=5

x-y|=|2-5|=|-3|=3

Solution: Because |-3|〉0 |b+4|or =0 again because of |-3|+|b+4|=0

So |-3|=3 |b+4|=0

Get b = -4a is what Dong Dong Ah.

Solution: Because |x+3|or =0, |2-y|or =0, |-z+5|or =0 again because of |x+3|+|2-y|+|z+5|=0

So x=-3, y=2, z=5

x+y+z=-3+2+5=4

x-y-z=-3-2-5=-10

Solution: Because |2x-4|or =0, |5-y|or =0 so x=2, y=5

x-y|=|2-5|=3

I don't know what the first question means.

a-3|+|b+4|=0。then a= 3 b= 4 if|x+3|+|2-y|+|z+5|=0, then x+y+z= 4, x-y-z= -10

x=-3 y=2 z=5

If |2x-4|+|5-y|=0, find |x-y|Value. (This question requires the process, first calculate how much x = how much, y is equal to how much).

Solution: Because |2x-4|+|5-y|=0

So |2x-4|=0 |5-y|=0

This results in x=2 y=5

Substitution|x-y|=|2-5|=|-3|=3

a-3|+|b+4|=0

The absolute value is greater than or equal to 0, and the addition is equal to 0, if one is greater than 0, then the other is less than 0, which is not true, so both are equal to 0

So a-3 = 0 and b + 4 = 0

a=3,b=-4

If |x+3|+|2-y|+|z+5|=0,x+3=0,2-y=0,-z+5=0

x=-3,y=2,x=5

x+y+z=-3+2+5=4

x-y-z=-3-2-5=-10

If |2x-4|+|5-y|=0, find |x-y|Value.

2x-4=0,5-y=0

x=2,y=5

x-y|=|2-5|=|-3|=3

2*(x=2)-4=0,5-(y=5)=0, so |x-y|=3

Solution: Since the absolute value will not be less than 0, you only need to ask for the equation in the absolute value = 0.

For example, for the first question, you just need to do ita-3|+|b+4|=0 is split into a-3=0 and b+4=0 to solve the equation, and the answer is 3 and -4

,b=-4

3.|2x-4|+|5-y|=0

And because |2x-4|AND |5-y|Greater than or equal to 0

Only x=2 y=5

x-y|=3

Please, where is the first question A? Got the question wrong, right?

1 x=3,y=1 2, so 4x-2y=112 -b>0,a-b<0,a<-b3 64 a,b,b,a=b;

a, b heterogeneous signs, each other is the opposite number.

1。 12

Greater than-b is greater than a

a is equal to b or a is the opposite of b.

1 Solution: Because: |x-3|+|2y-1|=0So:|x-3|=0 x=3

2y-1|=0 y=2/1

So: 4x-2y=11

2 Solution: Because: a<0 |-b|<|a|-c=-b so: a=0

So: when||x-2|=0 minimum.

So: the minimum is 6

4 Solution: When a b has the same sign, a=b

When a and b have the same sign, a and b are inverse numbers to each other.

|x-2y+1|with |x+y-5|If they are opposites of each other, then x= 3 y= 2 because the absolute value must be positive or zero, and the opposite of a positive number is negative, so |x-2y+1|=0 |x+y-5| =0

x-2y+1=0

x+y-5 =0

The solution is x=3 y=2

x=3,y=2

If two non-negative numbers are opposite to each other, then both numbers are 0

So x-2y+1=0

x+y-5=0

Solving the system of equations yields x=3, y=2

Absolute values are greater than or equal to 0, while opposite numbers are either positive and negative or both 0, so both are 0

So the solution is x=3 y=2

(1) If a is a rational number, then -a<0A (false) rational number may be a negative number.

2) On the number line, the point representing the opposite of -a must be to the right of the origin. (False) a may be negative, then the opposite of -a is to the left of the origin.

3) The opposite of any number is not the same as the number itself. The opposite of (false) 0 is still 0

4) The original number must be greater than his opposite. A (false) negative number is smaller than its opposite.

5) The absolute value of a positive number must be greater than the absolute value of a negative number. The (false) absolute value of 3 is less than the absolute value of -5.

6) If there are two rational numbers a>b, then [a] >[b]. False) If both a and b are negative, then |a|<|b|

7) The absolute value of a number must be positive. The absolute value of (false) 0 is 0

8) A number with an absolute value equal to 5 is -5. The absolute value of (false) 5 is also 5

9) If two numbers are known, the absolute value of these two numbers must also be unequal. The absolute values of (false) 3 and -3 are both 3

10) If [a]=[b], then a=b. (False)|3|=|-3|

11) The magnitude relationship between A and A 1 is A>A 1. What you want to say is 1 a, assuming a= then 1 a=2

(False)|(False)|(False)|(False)|(False)|(False)|(False)|(False)|Right; (False)|(False)|

One. 1.On both sides of the origin and at an equal distance from the origin.

The distance is 10 or -b, where b = 0

Two. 10 - -7 + 3 + 2 5) = 32 5 (representing the number "thirty-two out of five").

1 + 3 3 + 2 3) = 20 11 (for the number "twenty out of eleven").

1.Symmetry from the origin.

The third question should be drawn by yourself... I can't figure it out on this computer -- the distance is 4 out of 10....

6.±b7.There is a problem with this question... Let's take a look at it again.

Question 2... Are those vertical bars absolute? It's still separated...

<>1.The absolute values are: 5, 3, 2, 0, 5, 2 (the absolute value of negative numbers can be removed from the "-", 0 is still 0, and positive numbers are unchanged).

2.2 (you can work backwards, and you will be in the future).

The absolute values are: 0, 2, 3 and 3 fifths.

In the first question, on the number line, the absolute value depends on the distance from the point to 0 is several units of length.

5 Three-twoth.

Question 2... 2 If the absolute value of a is known to be x, then a is x. 0 2 1/2 18/5.

When I was studying, it didn't seem like there was a five-step equation, so you should have talked about the format in class.

--|8|=--8 --97|=--97 --2|The inverse of =--2 7 is --7 -|8|The opposite of the number is 8

By definition: the absolute value of a positive number is itself, the absolute value of a negative number is its opposite, and the absolute value of 0 is 0.

The opposite number is to replace the symbol that is the number with the opposite of it (this is the way to die) Make a suggestion: the above topic is a junior high school topic, it is recommended that you buy some tutorial books, because junior high school mathematics is a bit difficult, about tutorial books, you can buy: point dial or multiple learning method and so on.

-(-8|(brackets should be added here).

The inverse of =--2 7 is --7 -|

8, and its opposite number is 8

-|-8|=-|8|=-8

The opposite number of 7 is -7

-8|The opposite of is |-8|=8

First of all, it is necessary to understand.

Definition of Opposite Number The opposite of a positive number is a negative number The opposite number of a negative number is a positive number The opposite number of 0 is 0 Definition of the absolute value The absolute value of a positive number is a positive number The absolute value of a negative number is a positive number The absolute value of 0 is 0

The opposite number of 7 is -7

-8|=-|8|The opposite of =-8 is 8

Only two numbers with different signs, and the absolute value is equal, is called opposite to each other.

If the two real numbers a and b satisfy b = a. Let's say that b is the opposite of a. In this case, the opposite number of b is b= ( a)=a, then we say that "the opposite number has mutual symmetry"; Two real numbers a and b that are opposites of each other must satisfy a+b=0

1. If|a|+a=0, then the value range of a is a 02, if|a|+|b|=0, then a=0, b=0, I hope you can help you with the cave bend. and Dan.