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4/7+x/21=3/x
We move all terms to the left:
4/7+x/21-(3/x)=0
Domain of the equation: x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
x/21-(+3/x)+4/7=0
We get rid of parentheses
x/21-3/x+4/7=0
We calculate fractions
There is no solution for this equation
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