12x-39=9x+66

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Solution for 12x-39=9x+66 equation: 



12x-39=9x+66

We move all terms to the left:

12x-39-(9x+66)=0

We get rid of parentheses

12x-9x-66-39=0

We add all the numbers together, and all the variables

3x-105=0

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

3x=105

x=105/3

x=35

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