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400/x-400/x+40=1/2
We move all terms to the left:
400/x-400/x+40-(1/2)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
400/x-400/x+40-(+1/2)=0
We get rid of parentheses
400/x-400/x+40-1/2=0
We calculate fractions
There is no solution for this equation
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