200/12=42/x

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Solution for 200/12=42/x equation: 


D( x )

x = 0

x = 0

x = 0

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

200/12 = 42/x // - 42/x

200/12-(42/x) = 0

200/12-42*x^-1 = 0

-42*x^-1 = -50/3 // : -42

x^-1 = 25/63

-1 < 0

1/(x^1) = 25/63 // * x^1

1 = 25/63*x^1 // : 25/63

63/25 = x^1

x = 63/25

x = 63/25

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