12/r=48/16

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Solution for 12/r=48/16 equation: 


D( r )

r = 0

r = 0

r = 0

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

12/r = 48/16 // - 48/16

12/r-(48/16) = 0

12/r-3 = 0

12*r^-1 = 3 // : 12

r^-1 = 1/4

-1 < 0

1/(r^1) = 1/4 // * r^1

1 = 1/4*r^1 // : 1/4

4 = r^1

r = 4

r = 4

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