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2x/5-x/4=9/20
We move all terms to the left:
2x/5-x/4-(9/20)=0
We add all the numbers together, and all the variables
2x/5-x/4-(+9/20)=0
We get rid of parentheses
2x/5-x/4-9/20=0
We calculate fractions
There is no solution for this equation
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