9x+12=-3x-18

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Solution for 9x+12=-3x-18 equation: 



9x+12=-3x-18

We move all terms to the left:

9x+12-(-3x-18)=0

We get rid of parentheses

9x+3x+18+12=0

We add all the numbers together, and all the variables

12x+30=0

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

12x=-30

x=-30/12

x=-2+1/2

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