-1/5r=2r+1

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Solution for -1/5r=2r+1 equation: 



-1/5r=2r+1

We move all terms to the left:

-1/5r-(2r+1)=0



Domain of the equation: 5r!=0

r!=0/5

r!=0

r∈R



We get rid of parentheses

-1/5r-2r-1=0

We multiply all the terms by the denominator


-2r*5r-1*5r-1=0

Wy multiply elements

-10r^2-5r-1=0

a = -10; b = -5; c = -1;
Δ = b2-4ac
Δ = -52-4·(-10)·(-1)
Δ = -15
Delta is less than zero, so there is no solution for the equation

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