17/2=7/r

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Solution for 17/2=7/r equation: 


D( r )

r = 0

r = 0

r = 0

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

17/2 = 7/r // - 7/r

17/2-(7/r) = 0

17/2-7*r^-1 = 0

-7*r^-1 = -17/2 // : -7

r^-1 = 17/14

-1 < 0

1/(r^1) = 17/14 // * r^1

1 = 17/14*r^1 // : 17/14

14/17 = r^1

r = 14/17

r = 14/17

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