9x+15-12x=-30

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Solution for 9x+15-12x=-30 equation: 



9x+15-12x=-30

We move all terms to the left:

9x+15-12x-(-30)=0

We add all the numbers together, and all the variables

-3x+45=0

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

-3x=-45

x=-45/-3

x=+15

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