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7x-21=7x+1-38
We move all terms to the left:
7x-21-(7x+1-38)=0
We add all the numbers together, and all the variables
7x-(7x-37)-21=0
We get rid of parentheses
7x-7x+37-21=0
We add all the numbers together, and all the variables
16!=0
There is no solution for this equation
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