x+20=-x-12

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Solution for x+20=-x-12 equation: 



x+20=-x-12

We move all terms to the left:

x+20-(-x-12)=0

We add all the numbers together, and all the variables

x-(-1x-12)+20=0

We get rid of parentheses

x+1x+12+20=0

We add all the numbers together, and all the variables

2x+32=0

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

2x=-32

x=-32/2

x=-16

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