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3/4-z/5=7/20
We move all terms to the left:
3/4-z/5-(7/20)=0
We add all the numbers together, and all the variables
-z/5+3/4-(+7/20)=0
We get rid of parentheses
-z/5+3/4-7/20=0
We calculate fractions
There is no solution for this equation
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