4/b=32/40

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Solution for 4/b=32/40 equation: 


D( b )

b = 0

b = 0

b = 0

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

4/b = 32/40 // - 32/40

4/b-(32/40) = 0

4/b-4/5 = 0

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

b^-1 = 1/5

-1 < 0

1/(b^1) = 1/5 // * b^1

1 = 1/5*b^1 // : 1/5

5 = b^1

b = 5

b = 5

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