7/4=5/b-2

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Solution for 7/4=5/b-2 equation: 


D( b )

b = 0

b = 0

b = 0

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

7/4 = 5/b-2 // - 5/b-2

7/4-(5/b)+2 = 0

7/4-5*b^-1+2 = 0

-5*b^-1 = -15/4 // : -5

b^-1 = 3/4

-1 < 0

1/(b^1) = 3/4 // * b^1

1 = 3/4*b^1 // : 3/4

4/3 = b^1

b = 4/3

b = 4/3

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