3x-9+4x+12=9

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Solution for 3x-9+4x+12=9 equation: 



3x-9+4x+12=9

We move all terms to the left:

3x-9+4x+12-(9)=0

We add all the numbers together, and all the variables

7x-6=0

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

7x=6

x=6/7

x=6/7

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