3r-r*2r=40

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Solution for 3r-r*2r=40 equation: 



3r-r*2r=40

We move all terms to the left:

3r-r*2r-(40)=0

Wy multiply elements

-2r^2+3r-40=0

a = -2; b = 3; c = -40;
Δ = b2-4ac
Δ = 32-4·(-2)·(-40)
Δ = -311
Delta is less than zero, so there is no solution for the equation

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