(91-x)=(x+7)

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



(91-x)=(x+7)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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



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

(x+7)

We get rid of parentheses

x+7

Back to the equation:

-(x+7)



We get rid of parentheses

-1x-x-7+91=0

We add all the numbers together, and all the variables

-2x+84=0

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

-2x=-84

x=-84/-2

x=+42

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