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9/10=r+8/r
We move all terms to the left:
9/10-(r+8/r)=0
Domain of the equation: r)!=0We add all the numbers together, and all the variables
r!=0/1
r!=0
r∈R
-(+r+8/r)+9/10=0
We get rid of parentheses
-r-8/r+9/10=0
We calculate fractions
There is no solution for this equation
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