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21/2r+1+2r=91/10
We move all terms to the left:
21/2r+1+2r-(91/10)=0
Domain of the equation: 2r!=0We add all the numbers together, and all the variables
r!=0/2
r!=0
r∈R
21/2r+2r+1-(+91/10)=0
We add all the numbers together, and all the variables
2r+21/2r+1-(+91/10)=0
We get rid of parentheses
2r+21/2r+1-91/10=0
We calculate fractions
There is no solution for this equation
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