3x-21=21+3x

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



3x-21=21+3x

We move all terms to the left:

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

-42!=0

There is no solution for this equation

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