15+6=-3(7x-7)

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Solution for 15+6=-3(7x-7) equation: 



15+6=-3(7x-7)

We move all terms to the left:

15+6-(-3(7x-7))=0

We add all the numbers together, and all the variables

-(-3(7x-7))+21=0



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

-3(7x-7)

We multiply parentheses

-21x+21

Back to the equation:

-(-21x+21)



We get rid of parentheses

21x-21+21=0

We add all the numbers together, and all the variables

21x=0

x=0/21

x=0

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