3x-6+9x+12=6x-15

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Solution for 3x-6+9x+12=6x-15 equation: 



3x-6+9x+12=6x-15

We move all terms to the left:

3x-6+9x+12-(6x-15)=0

We add all the numbers together, and all the variables

12x-(6x-15)+6=0

We get rid of parentheses

12x-6x+15+6=0

We add all the numbers together, and all the variables

6x+21=0

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

6x=-21

x=-21/6

x=-3+1/2

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