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

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



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

We move all terms to the left:

-12-(-3(x-15))=0



We calculate terms in parentheses: -(-3(x-15)), so:

-3(x-15)

We multiply parentheses

-3x+45

Back to the equation:

-(-3x+45)



We get rid of parentheses

3x-45-12=0

We add all the numbers together, and all the variables

3x-57=0

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

3x=57

x=57/3

x=19

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