x+3=21+x

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Solution for x+3=21+x equation: 



x+3=21+x

We move all terms to the left:

x+3-(21+x)=0

We add all the numbers together, and all the variables

x-(x+21)+3=0

We get rid of parentheses

x-x-21+3=0

We add all the numbers together, and all the variables

-18!=0

There is no solution for this equation

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