-12=(-3)(x-7)

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



-12=(-3)(x-7)

We move all terms to the left:

-12-((-3)(x-7))=0

We multiply parentheses ..

-((-3x+21))-12=0



We calculate terms in parentheses: -((-3x+21)), so:

(-3x+21)

We get rid of parentheses

-3x+21

Back to the equation:

-(-3x+21)



We get rid of parentheses

3x-21-12=0

We add all the numbers together, and all the variables

3x-33=0

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

3x=33

x=33/3

x=11

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