7=7(c-91)

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Solution for 7=7(c-91) equation: 



7=7(c-91)

We move all terms to the left:

7-(7(c-91))=0



We calculate terms in parentheses: -(7(c-91)), so:

7(c-91)

We multiply parentheses

7c-637

Back to the equation:

-(7c-637)



We get rid of parentheses

-7c+637+7=0

We add all the numbers together, and all the variables

-7c+644=0

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

-7c=-644

c=-644/-7

c=+92

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