2x+4x+12=9x-15

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Solution for 2x+4x+12=9x-15 equation: 



2x+4x+12=9x-15

We move all terms to the left:

2x+4x+12-(9x-15)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

6x-9x+15+12=0

We add all the numbers together, and all the variables

-3x+27=0

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

-3x=-27

x=-27/-3

x=+9

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