12+3x+3=-3+9x

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Solution for 12+3x+3=-3+9x equation: 



12+3x+3=-3+9x

We move all terms to the left:

12+3x+3-(-3+9x)=0

We add all the numbers together, and all the variables

3x-(9x-3)+12+3=0

We add all the numbers together, and all the variables

3x-(9x-3)+15=0

We get rid of parentheses

3x-9x+3+15=0

We add all the numbers together, and all the variables

-6x+18=0

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

-6x=-18

x=-18/-6

x=+3

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