9(r-r1/2)=-3r1/2-5r

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Solution for 9(r-r1/2)=-3r1/2-5r equation: 


r in (-oo:+oo)

9*(r-((r^1)/2)) = (-3*r^1)/2-(5*r) // - (-3*r^1)/2-(5*r)

9*(r-((r^1)/2))-((-3*r^1)/2)+5*r = 0

9*(r-(r/2))+(3/2)*r+5*r = 0

1/2*9*r+(3*r)/2+5*r = 0

(1/2*2*9*r)/2+(3*r)/2+(2*5*r)/2 = 0

1/2*2*9*r+3*r+2*5*r = 0

12*r+10*r = 0

22*r = 0

(22*r)/2 = 0

(22*r)/2 = 0 // * 2

22*r = 0

22*r = 0 // : 22

r = 0

r = 0

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