x+4=-12-7x

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Solution for x+4=-12-7x equation: 



x+4=-12-7x

We move all terms to the left:

x+4-(-12-7x)=0

We add all the numbers together, and all the variables

x-(-7x-12)+4=0

We get rid of parentheses

x+7x+12+4=0

We add all the numbers together, and all the variables

8x+16=0

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

8x=-16

x=-16/8

x=-2

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