689/x=7

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Solution for 689/x=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

689/x = 7 // - 7

689/x-7 = 0

689*x^-1 = 7 // : 689

x^-1 = 7/689

-1 < 0

1/(x^1) = 7/689 // * x^1

1 = 7/689*x^1 // : 7/689

689/7 = x^1

x = 689/7

x = 689/7

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