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5/2-5/4=a/7
We move all terms to the left:
5/2-5/4-(a/7)=0
We add all the numbers together, and all the variables
-(+a/7)+5/2-5/4=0
We get rid of parentheses
-a/7+5/2-5/4=0
We calculate fractions
There is no solution for this equation
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