2x+8=-1x+20

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Solution for 2x+8=-1x+20 equation: 



2x+8=-1x+20

We move all terms to the left:

2x+8-(-1x+20)=0

We get rid of parentheses

2x+1x-20+8=0

We add all the numbers together, and all the variables

3x-12=0

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

3x=12

x=12/3

x=4

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