-91=-7(1+2x)

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Solution for -91=-7(1+2x) equation: 



-91=-7(1+2x)

We move all terms to the left:

-91-(-7(1+2x))=0

We add all the numbers together, and all the variables

-(-7(2x+1))-91=0



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

-7(2x+1)

We multiply parentheses

-14x-7

Back to the equation:

-(-14x-7)



We get rid of parentheses

14x+7-91=0

We add all the numbers together, and all the variables

14x-84=0

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

14x=84

x=84/14

x=6

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