12x+9=6-3x

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



12x+9=6-3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

12x+3x-6+9=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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