x+7=-2x-20

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Solution for x+7=-2x-20 equation: 



x+7=-2x-20

We move all terms to the left:

x+7-(-2x-20)=0

We get rid of parentheses

x+2x+20+7=0

We add all the numbers together, and all the variables

3x+27=0

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

3x=-27

x=-27/3

x=-9

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