12x+3=15x-15

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



12x+3=15x-15

We move all terms to the left:

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

We get rid of parentheses

12x-15x+15+3=0

We add all the numbers together, and all the variables

-3x+18=0

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

-3x=-18

x=-18/-3

x=+6

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