87=-2(-1+7x)-3x

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Solution for 87=-2(-1+7x)-3x equation: 



87=-2(-1+7x)-3x

We move all terms to the left:

87-(-2(-1+7x)-3x)=0

We add all the numbers together, and all the variables

-(-2(7x-1)-3x)+87=0



We calculate terms in parentheses: -(-2(7x-1)-3x), so:

-2(7x-1)-3x

We add all the numbers together, and all the variables

-3x-2(7x-1)

We multiply parentheses

-3x-14x+2

We add all the numbers together, and all the variables

-17x+2

Back to the equation:

-(-17x+2)



We get rid of parentheses

17x-2+87=0

We add all the numbers together, and all the variables

17x+85=0

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

17x=-85

x=-85/17

x=-5

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