x+8=20-3x

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



x+8=20-3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

x+3x-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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