15x+15=12x+9

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Solution for 15x+15=12x+9 equation: 



15x+15=12x+9

We move all terms to the left:

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

We get rid of parentheses

15x-12x-9+15=0

We add all the numbers together, and all the variables

3x+6=0

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

3x=-6

x=-6/3

x=-2

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