12x-9=3x-54

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Solution for 12x-9=3x-54 equation: 



12x-9=3x-54

We move all terms to the left:

12x-9-(3x-54)=0

We get rid of parentheses

12x-3x+54-9=0

We add all the numbers together, and all the variables

9x+45=0

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

9x=-45

x=-45/9

x=-5

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