-6x+12+9x+84=90

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Solution for -6x+12+9x+84=90 equation: 



-6x+12+9x+84=90

We move all terms to the left:

-6x+12+9x+84-(90)=0

We add all the numbers together, and all the variables

3x+6=0

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

3x=-6

x=-6/3

x=-2

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