-81=4x+7(1+x)

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Solution for -81=4x+7(1+x) equation: 



-81=4x+7(1+x)

We move all terms to the left:

-81-(4x+7(1+x))=0

We add all the numbers together, and all the variables

-(4x+7(x+1))-81=0



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

4x+7(x+1)

We multiply parentheses

4x+7x+7

We add all the numbers together, and all the variables

11x+7

Back to the equation:

-(11x+7)



We get rid of parentheses

-11x-7-81=0

We add all the numbers together, and all the variables

-11x-88=0

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

-11x=88

x=88/-11

x=-8

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