3/r-5/2=9

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


D( r )

r = 0

r = 0

r = 0

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

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

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

3/r-5/2-9 = 0

3*r^-1 = 23/2 // : 3

r^-1 = 23/6

-1 < 0

1/(r^1) = 23/6 // * r^1

1 = 23/6*r^1 // : 23/6

6/23 = r^1

r = 6/23

r = 6/23

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