15/r=6/4

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Solution for 15/r=6/4 equation: 


D( r )

r = 0

r = 0

r = 0

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

15/r = 6/4 // - 6/4

15/r-(6/4) = 0

15/r-3/2 = 0

15*r^-1 = 3/2 // : 15

r^-1 = 1/10

-1 < 0

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

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

10 = r^1

r = 10

r = 10

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