12/12=28/x

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Solution for 12/12=28/x equation: 


D( x )

x = 0

x = 0

x = 0

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

12/12 = 28/x // - 28/x

12/12-(28/x) = 0

12/12-28*x^-1 = 0

-28*x^-1 = -1 // : -28

x^-1 = 1/28

-1 < 0

1/(x^1) = 1/28 // * x^1

1 = 1/28*x^1 // : 1/28

28 = x^1

x = 28

x = 28

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