-12x-15=3x+15

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



-12x-15=3x+15

We move all terms to the left:

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

We get rid of parentheses

-12x-3x-15-15=0

We add all the numbers together, and all the variables

-15x-30=0

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

-15x=30

x=30/-15

x=-2

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