7/3=28/b

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Solution for 7/3=28/b equation: 


D( b )

b = 0

b = 0

b = 0

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

7/3 = 28/b // - 28/b

7/3-(28/b) = 0

7/3-28*b^-1 = 0

-28*b^-1 = -7/3 // : -28

b^-1 = 1/12

-1 < 0

1/(b^1) = 1/12 // * b^1

1 = 1/12*b^1 // : 1/12

12 = b^1

b = 12

b = 12

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