7=890/x

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Solution for 7=890/x equation: 


D( x )

x = 0

x = 0

x = 0

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

7 = 890/x // - 890/x

7-(890/x) = 0

7-890*x^-1 = 0

-890*x^-1 = -7 // : -890

x^-1 = 7/890

-1 < 0

1/(x^1) = 7/890 // * x^1

1 = 7/890*x^1 // : 7/890

890/7 = x^1

x = 890/7

x = 890/7

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