(x-12)*(-3)=-54

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Solution for (x-12)*(-3)=-54 equation: 



(x-12)(-3)=-54

We move all terms to the left:

(x-12)(-3)-(-54)=0

We add all the numbers together, and all the variables

(x-12)(-3)+54=0

We multiply parentheses ..

(-3x+36)+54=0

We get rid of parentheses

-3x+36+54=0

We add all the numbers together, and all the variables

-3x+90=0

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

-3x=-90

x=-90/-3

x=+30

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