91=-3(7x-1)+4

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Solution for 91=-3(7x-1)+4 equation: 



91=-3(7x-1)+4

We move all terms to the left:

91-(-3(7x-1)+4)=0



We calculate terms in parentheses: -(-3(7x-1)+4), so:

-3(7x-1)+4

We multiply parentheses

-21x+3+4

We add all the numbers together, and all the variables

-21x+7

Back to the equation:

-(-21x+7)



We get rid of parentheses

21x-7+91=0

We add all the numbers together, and all the variables

21x+84=0

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

21x=-84

x=-84/21

x=-4

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