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25/21=40/x
We move all terms to the left:
25/21-(40/x)=0
Domain of the equation: x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
-(+40/x)+25/21=0
We get rid of parentheses
-40/x+25/21=0
We calculate fractions
There is no solution for this equation
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