-x+8-(-2x)=-7

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Solution for -x+8-(-2x)=-7 equation: 



-x+8-(-2x)=-7

We move all terms to the left:

-x+8-(-2x)-(-7)=0

We add all the numbers together, and all the variables

-1x-(-2x)+15=0

We get rid of parentheses

-1x+2x+15=0

We add all the numbers together, and all the variables

x+15=0

We move all terms containing x to the left, all other terms to the right

x=-15

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