12=-6x-18

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Solution for 12=-6x-18 equation: 



12=-6x-18

We move all terms to the left:

12-(-6x-18)=0

We get rid of parentheses

6x+18+12=0

We add all the numbers together, and all the variables

6x+30=0

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

6x=-30

x=-30/6

x=-5

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