7-(2/b)=5/b

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Solution for 7-(2/b)=5/b equation: 


D( b )

b = 0

b = 0

b = 0

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

7-(2/b) = 5/b // - 5/b

7-(2/b)-(5/b) = 0

7-2*b^-1-5*b^-1 = 0

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

b^-1 = 1

-1 < 0

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

1 = 1*b^1 // : 1

1 = b^1

b = 1

b = 1

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