12x+30-3x=66

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Solution for 12x+30-3x=66 equation: 



12x+30-3x=66

We move all terms to the left:

12x+30-3x-(66)=0

We add all the numbers together, and all the variables

9x-36=0

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

9x=36

x=36/9

x=4

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