(3r-4)/r=7/8

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Solution for (3r-4)/r=7/8 equation: 


D( r )

r = 0

r = 0

r = 0

r in (-oo:0) U (0:+oo)

(3*r-4)/r = 7/8 // - 7/8

(3*r-4)/r-(7/8) = 0

(3*r-4)/r-7/8 = 0

(8*(3*r-4))/(8*r)+(-7*r)/(8*r) = 0

8*(3*r-4)-7*r = 0

17*r-32 = 0

(17*r-32)/(8*r) = 0

(17*r-32)/(8*r) = 0 // * 8*r

17*r-32 = 0

17*r-32 = 0 // + 32

17*r = 32 // : 17

r = 32/17

r = 32/17

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