12x-3x+99=12x+54

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Solution for 12x-3x+99=12x+54 equation: 



12x-3x+99=12x+54

We move all terms to the left:

12x-3x+99-(12x+54)=0

We add all the numbers together, and all the variables

9x-(12x+54)+99=0

We get rid of parentheses

9x-12x-54+99=0

We add all the numbers together, and all the variables

-3x+45=0

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

-3x=-45

x=-45/-3

x=+15

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