3x+9+12x=6

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Solution for 3x+9+12x=6 equation: 



3x+9+12x=6

We move all terms to the left:

3x+9+12x-(6)=0

We add all the numbers together, and all the variables

15x+3=0

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

15x=-3

x=-3/15

x=-1/5

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