20/8=50/d

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Solution for 20/8=50/d equation: 


D( d )

d = 0

d = 0

d = 0

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

20/8 = 50/d // - 50/d

20/8-(50/d) = 0

20/8-50*d^-1 = 0

-50*d^-1 = -5/2 // : -50

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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