3/7=18/d

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Solution for 3/7=18/d equation: 


D( d )

d = 0

d = 0

d = 0

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

3/7 = 18/d // - 18/d

3/7-(18/d) = 0

3/7-18*d^-1 = 0

-18*d^-1 = -3/7 // : -18

d^-1 = 1/42

-1 < 0

1/(d^1) = 1/42 // * d^1

1 = 1/42*d^1 // : 1/42

42 = d^1

d = 42

d = 42

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