5/r=15/9

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Solution for 5/r=15/9 equation: 


D( r )

r = 0

r = 0

r = 0

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

5/r = 15/9 // - 15/9

5/r-(15/9) = 0

5/r-5/3 = 0

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

r^-1 = 1/3

-1 < 0

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

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

3 = r^1

r = 3

r = 3

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