7/x/5=-1

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Solution for 7/x/5=-1 equation: 


D( x )

x = 0

x = 0

x = 0

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

(7/x)/5 = -1 // + 1

(7/x)/5+1 = 0

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

x^-1 = -5/7

-1 < 0

1/(x^1) = -5/7 // * x^1

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

-7/5 = x^1

x = -7/5

x = -7/5

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