15(x-3)=-90

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Solution for 15(x-3)=-90 equation: 



15(x-3)=-90

We move all terms to the left:

15(x-3)-(-90)=0

We add all the numbers together, and all the variables

15(x-3)+90=0

We multiply parentheses

15x-45+90=0

We add all the numbers together, and all the variables

15x+45=0

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

15x=-45

x=-45/15

x=-3

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