7x-21=7x+2

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Solution for 7x-21=7x+2 equation: 



7x-21=7x+2

We move all terms to the left:

7x-21-(7x+2)=0

We get rid of parentheses

7x-7x-2-21=0

We add all the numbers together, and all the variables

-23!=0

There is no solution for this equation

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