3x-21=2x+6

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Solution for 3x-21=2x+6 equation: 



3x-21=2x+6

We move all terms to the left:

3x-21-(2x+6)=0

We get rid of parentheses

3x-2x-6-21=0

We add all the numbers together, and all the variables

x-27=0

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

x=27

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