5x+21=21+2x

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Solution for 5x+21=21+2x equation: 



5x+21=21+2x

We move all terms to the left:

5x+21-(21+2x)=0

We add all the numbers together, and all the variables

5x-(2x+21)+21=0

We get rid of parentheses

5x-2x-21+21=0

We add all the numbers together, and all the variables

3x=0

x=0/3

x=0

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