3=1/4-5/b

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Solution for 3=1/4-5/b equation: 


D( b )

b = 0

b = 0

b = 0

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

3 = 1/4-(5/b) // - 1/4-(5/b)

5/b-(1/4)+3 = 0

5/b-1/4+3 = 0

5*b^-1 = -11/4 // : 5

b^-1 = -11/20

-1 < 0

1/(b^1) = -11/20 // * b^1

1 = -11/20*b^1 // : -11/20

-20/11 = b^1

b = -20/11

b = -20/11

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