720/b=6/7

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Solution for 720/b=6/7 equation: 


D( b )

b = 0

b = 0

b = 0

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

720/b = 6/7 // - 6/7

720/b-(6/7) = 0

720/b-6/7 = 0

720*b^-1 = 6/7 // : 720

b^-1 = 1/840

-1 < 0

1/(b^1) = 1/840 // * b^1

1 = 1/840*b^1 // : 1/840

840 = b^1

b = 840

b = 840

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