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5m+7-3m+1=2m-3
We move all terms to the left:
5m+7-3m+1-(2m-3)=0
We add all the numbers together, and all the variables
2m-(2m-3)+8=0
We get rid of parentheses
2m-2m+3+8=0
We add all the numbers together, and all the variables
11!=0
There is no solution for this equation