12/16=42/x

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Solution for 12/16=42/x equation: 


D( x )

x = 0

x = 0

x = 0

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

12/16 = 42/x // - 42/x

12/16-(42/x) = 0

12/16-42*x^-1 = 0

-42*x^-1 = -3/4 // : -42

x^-1 = 1/56

-1 < 0

1/(x^1) = 1/56 // * x^1

1 = 1/56*x^1 // : 1/56

56 = x^1

x = 56

x = 56

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