12x-30=-3x

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Solution for 12x-30=-3x equation: 



12x-30=-3x

We move all terms to the left:

12x-30-(-3x)=0

We get rid of parentheses

12x+3x-30=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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