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30-(x/40)=3x/80
We move all terms to the left:
30-(x/40)-(3x/80)=0
We add all the numbers together, and all the variables
-(+x/40)-(+3x/80)+30=0
We get rid of parentheses
-x/40-3x/80+30=0
We calculate fractions
There is no solution for this equation
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