12/b=9/15

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Solution for 12/b=9/15 equation: 


D( b )

b = 0

b = 0

b = 0

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

12/b = 9/15 // - 9/15

12/b-(9/15) = 0

12/b-3/5 = 0

12*b^-1 = 3/5 // : 12

b^-1 = 1/20

-1 < 0

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

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

20 = b^1

b = 20

b = 20

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