3x-12-9x=72

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Solution for 3x-12-9x=72 equation: 



3x-12-9x=72

We move all terms to the left:

3x-12-9x-(72)=0

We add all the numbers together, and all the variables

-6x-84=0

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

-6x=84

x=84/-6

x=-14

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