4/5(10r-20)-10r=1

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Solution for 4/5(10r-20)-10r=1 equation: 


r in (-oo:+oo)

(4/5)*(10*r-20)-(10*r) = 1 // - 1

(4/5)*(10*r-20)-(10*r)-1 = 0

(4/5)*(10*r-20)-10*r-1 = 0

4/5*(10*r-20)-10*r-1 = 0

4/5*(10*r-20)-10*r-1 = 0

-2*r-16-1 = 0

-2*r-17 = 0

-2*r-17 = 0

-2*r-17 = 0 // + 17

-2*r = 17 // : -2

r = 17/(-2)

r = -17/2

r = -17/2

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