3x-7=x+20

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Solution for 3x-7=x+20 equation: 



3x-7=x+20

We move all terms to the left:

3x-7-(x+20)=0

We get rid of parentheses

3x-x-20-7=0

We add all the numbers together, and all the variables

2x-27=0

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

2x=27

x=27/2

x=13+1/2

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