-21=-7(y-97)

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Solution for -21=-7(y-97) equation: 



-21=-7(y-97)

We move all terms to the left:

-21-(-7(y-97))=0



We calculate terms in parentheses: -(-7(y-97)), so:

-7(y-97)

We multiply parentheses

-7y+679

Back to the equation:

-(-7y+679)



We get rid of parentheses

7y-679-21=0

We add all the numbers together, and all the variables

7y-700=0

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

7y=700

y=700/7

y=100

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