5/7=125/x

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Solution for 5/7=125/x equation: 


D( x )

x = 0

x = 0

x = 0

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

5/7 = 125/x // - 125/x

5/7-(125/x) = 0

5/7-125*x^-1 = 0

-125*x^-1 = -5/7 // : -125

x^-1 = 1/175

-1 < 0

1/(x^1) = 1/175 // * x^1

1 = 1/175*x^1 // : 1/175

175 = x^1

x = 175

x = 175

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