80/x=70

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Solution for 80/x=70 equation: 


D( x )

x = 0

x = 0

x = 0

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

80/x = 70 // - 70

80/x-70 = 0

80*x^-1 = 70 // : 80

x^-1 = 7/8

-1 < 0

1/(x^1) = 7/8 // * x^1

1 = 7/8*x^1 // : 7/8

8/7 = x^1

x = 8/7

x = 8/7

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