3x-8=12-1x

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Solution for 3x-8=12-1x equation: 



3x-8=12-1x

We move all terms to the left:

3x-8-(12-1x)=0

We add all the numbers together, and all the variables

3x-(-1x+12)-8=0

We get rid of parentheses

3x+1x-12-8=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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