3x-8=-x-20

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Solution for 3x-8=-x-20 equation: 



3x-8=-x-20

We move all terms to the left:

3x-8-(-x-20)=0

We add all the numbers together, and all the variables

3x-(-1x-20)-8=0

We get rid of parentheses

3x+1x+20-8=0

We add all the numbers together, and all the variables

4x+12=0

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

4x=-12

x=-12/4

x=-3

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