12x+12=9x-9=

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Solution for 12x+12=9x-9= equation: 



12x+12=9x-9=

We move all terms to the left:

12x+12-(9x-9)=0

We get rid of parentheses

12x-9x+9+12=0

We add all the numbers together, and all the variables

3x+21=0

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

3x=-21

x=-21/3

x=-7

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