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4x/5-7x/8=9/20
We move all terms to the left:
4x/5-7x/8-(9/20)=0
We add all the numbers together, and all the variables
4x/5-7x/8-(+9/20)=0
We get rid of parentheses
4x/5-7x/8-9/20=0
We calculate fractions
There is no solution for this equation
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