3x-9=12x+7

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Solution for 3x-9=12x+7 equation: 



3x-9=12x+7

We move all terms to the left:

3x-9-(12x+7)=0

We get rid of parentheses

3x-12x-7-9=0

We add all the numbers together, and all the variables

-9x-16=0

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

-9x=16

x=16/-9

x=-1+7/9

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