9/x+5/x-7/x

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Solution for 9/x+5/x-7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

9/x+5/x-(7/x) = 0

9/x+5/x-7*x^-1 = 0

7*x^-1 = 0 // : 7

x^-1 = 0

x naleu017Cy do O

x belongs to the empty set

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