-8x-4=-7x+21

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Solution for -8x-4=-7x+21 equation: 



-8x-4=-7x+21

We move all terms to the left:

-8x-4-(-7x+21)=0

We get rid of parentheses

-8x+7x-21-4=0

We add all the numbers together, and all the variables

-1x-25=0

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

-x=25

x=25/-1

x=-25

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