12=x(-3)

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Solution for 12=x(-3) equation: 



12=x(-3)

We move all terms to the left:

12-(x(-3))=0



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

x(-3)

We multiply parentheses

-3x

Back to the equation:

-(-3x)



We get rid of parentheses

3x+12=0

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

3x=-12

x=-12/3

x=-4

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