80/24=70/x

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Solution for 80/24=70/x equation: 


D( x )

x = 0

x = 0

x = 0

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

80/24 = 70/x // - 70/x

80/24-(70/x) = 0

80/24-70*x^-1 = 0

-70*x^-1 = -10/3 // : -70

x^-1 = 1/21

-1 < 0

1/(x^1) = 1/21 // * x^1

1 = 1/21*x^1 // : 1/21

21 = x^1

x = 21

x = 21

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