3/2=5/r

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Solution for 3/2=5/r equation: 


D( r )

r = 0

r = 0

r = 0

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

3/2 = 5/r // - 5/r

3/2-(5/r) = 0

3/2-5*r^-1 = 0

-5*r^-1 = -3/2 // : -5

r^-1 = 3/10

-1 < 0

1/(r^1) = 3/10 // * r^1

1 = 3/10*r^1 // : 3/10

10/3 = r^1

r = 10/3

r = 10/3

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