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1/90+1/x=1/60
We move all terms to the left:
1/90+1/x-(1/60)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
1/x+1/90-(+1/60)=0
We get rid of parentheses
1/x+1/90-1/60=0
We calculate fractions
There is no solution for this equation
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