3x+9=7x+12+2x+15

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Solution for 3x+9=7x+12+2x+15 equation: 



3x+9=7x+12+2x+15

We move all terms to the left:

3x+9-(7x+12+2x+15)=0

We add all the numbers together, and all the variables

3x-(9x+27)+9=0

We get rid of parentheses

3x-9x-27+9=0

We add all the numbers together, and all the variables

-6x-18=0

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

-6x=18

x=18/-6

x=-3

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