12+7x=-x-12

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Solution for 12+7x=-x-12 equation: 



12+7x=-x-12

We move all terms to the left:

12+7x-(-x-12)=0

We add all the numbers together, and all the variables

7x-(-1x-12)+12=0

We get rid of parentheses

7x+1x+12+12=0

We add all the numbers together, and all the variables

8x+24=0

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

8x=-24

x=-24/8

x=-3

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