1/3=20/d

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Solution for 1/3=20/d equation: 


D( d )

d = 0

d = 0

d = 0

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

1/3 = 20/d // - 20/d

1/3-(20/d) = 0

1/3-20*d^-1 = 0

-20*d^-1 = -1/3 // : -20

d^-1 = 1/60

-1 < 0

1/(d^1) = 1/60 // * d^1

1 = 1/60*d^1 // : 1/60

60 = d^1

d = 60

d = 60

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