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8/3-m/7=8/21
We move all terms to the left:
8/3-m/7-(8/21)=0
We add all the numbers together, and all the variables
-m/7+8/3-(+8/21)=0
We get rid of parentheses
-m/7+8/3-8/21=0
We calculate fractions
There is no solution for this equation
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