81/d=3

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Solution for 81/d=3 equation: 


D( d )

d = 0

d = 0

d = 0

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

81/d = 3 // - 3

81/d-3 = 0

81*d^-1 = 3 // : 81

d^-1 = 1/27

-1 < 0

1/(d^1) = 1/27 // * d^1

1 = 1/27*d^1 // : 1/27

27 = d^1

d = 27

d = 27

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