(8/12)=(28/x)

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Solution for (8/12)=(28/x) equation: 


D( x )

x = 0

x = 0

x = 0

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

8/12 = 28/x // - 28/x

8/12-(28/x) = 0

8/12-28*x^-1 = 0

-28*x^-1 = -2/3 // : -28

x^-1 = 1/42

-1 < 0

1/(x^1) = 1/42 // * x^1

1 = 1/42*x^1 // : 1/42

42 = x^1

x = 42

x = 42

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