12x-3x+99=12x+39

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Solution for 12x-3x+99=12x+39 equation: 



12x-3x+99=12x+39

We move all terms to the left:

12x-3x+99-(12x+39)=0

We add all the numbers together, and all the variables

9x-(12x+39)+99=0

We get rid of parentheses

9x-12x-39+99=0

We add all the numbers together, and all the variables

-3x+60=0

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

-3x=-60

x=-60/-3

x=+20

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