3x-21=23-3x-2

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Solution for 3x-21=23-3x-2 equation: 



3x-21=23-3x-2

We move all terms to the left:

3x-21-(23-3x-2)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x+3x-21-21=0

We add all the numbers together, and all the variables

6x-42=0

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

6x=42

x=42/6

x=7

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