3/7=1440/x

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Solution for 3/7=1440/x equation: 


D( x )

x = 0

x = 0

x = 0

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

3/7 = 1440/x // - 1440/x

3/7-(1440/x) = 0

3/7-1440*x^-1 = 0

-1440*x^-1 = -3/7 // : -1440

x^-1 = 1/3360

-1 < 0

1/(x^1) = 1/3360 // * x^1

1 = 1/3360*x^1 // : 1/3360

3360 = x^1

x = 3360

x = 3360

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