-87=-7(-x+7)+4

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Solution for -87=-7(-x+7)+4 equation: 



-87=-7(-x+7)+4

We move all terms to the left:

-87-(-7(-x+7)+4)=0

We add all the numbers together, and all the variables

-(-7(-1x+7)+4)-87=0



We calculate terms in parentheses: -(-7(-1x+7)+4), so:

-7(-1x+7)+4

We multiply parentheses

7x-49+4

We add all the numbers together, and all the variables

7x-45

Back to the equation:

-(7x-45)



We get rid of parentheses

-7x+45-87=0

We add all the numbers together, and all the variables

-7x-42=0

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

-7x=42

x=42/-7

x=-6

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