204k views
2 votes
If -2x+5x+3=12, find the value of x-8

2 Answers

5 votes

Answer:

-5

Explanation:

If you combine the like terms you would get 3x + 3= 12. Where u subtract 3 on each side, you would get 3x=9 and when you divide 3 on each side you would get x=3. To answer the problem, 3-8 would be -5.

User Jilles Van Gurp
by
7.2k points
2 votes

Answer:

-5

The Problem:

If
-2x+5x+3=12, then the value of
x-8 is ?

Explanation:

Let's solve this for x:


-2x+5x+3=12

Combine like terms:


3x+3=12

Subtract 3 on both sides:


3x=12-3

Simplify:


3x=9

Divide both sides by 3:


x=(9)/(3)

Simplify:


x=3

So if
x=3 then
x-8=3-8=-5.

User StephenS
by
6.7k points
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