12+6x=-30-x

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Solution for 12+6x=-30-x equation: 



12+6x=-30-x

We move all terms to the left:

12+6x-(-30-x)=0

We add all the numbers together, and all the variables

6x-(-1x-30)+12=0

We get rid of parentheses

6x+1x+30+12=0

We add all the numbers together, and all the variables

7x+42=0

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

7x=-42

x=-42/7

x=-6

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