3/4=15/d

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Solution for 3/4=15/d equation: 


D( d )

d = 0

d = 0

d = 0

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

3/4 = 15/d // - 15/d

3/4-(15/d) = 0

3/4-15*d^-1 = 0

-15*d^-1 = -3/4 // : -15

d^-1 = 1/20

-1 < 0

1/(d^1) = 1/20 // * d^1

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

20 = d^1

d = 20

d = 20

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