15+12=-3(7x-9)

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Solution for 15+12=-3(7x-9) equation: 



15+12=-3(7x-9)

We move all terms to the left:

15+12-(-3(7x-9))=0

We add all the numbers together, and all the variables

-(-3(7x-9))+27=0



We calculate terms in parentheses: -(-3(7x-9)), so:

-3(7x-9)

We multiply parentheses

-21x+27

Back to the equation:

-(-21x+27)



We get rid of parentheses

21x-27+27=0

We add all the numbers together, and all the variables

21x=0

x=0/21

x=0

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