8/7=12/b

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Solution for 8/7=12/b equation: 


D( b )

b = 0

b = 0

b = 0

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

8/7 = 12/b // - 12/b

8/7-(12/b) = 0

8/7-12*b^-1 = 0

-12*b^-1 = -8/7 // : -12

b^-1 = 2/21

-1 < 0

1/(b^1) = 2/21 // * b^1

1 = 2/21*b^1 // : 2/21

21/2 = b^1

b = 21/2

b = 21/2

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