-3x+90=117-12x

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Solution for -3x+90=117-12x equation: 



-3x+90=117-12x

We move all terms to the left:

-3x+90-(117-12x)=0

We add all the numbers together, and all the variables

-3x-(-12x+117)+90=0

We get rid of parentheses

-3x+12x-117+90=0

We add all the numbers together, and all the variables

9x-27=0

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

9x=27

x=27/9

x=3

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