31/19.3=7/x

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Solution for 31/19.3=7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

31/19.3 = 7/x // - 7/x

31/19.3-(7/x) = 0

31/19.3-7*x^-1 = 0

-7*x^-1 = -1.60621762 // : -7

x^-1 = 0.22945966

-1 < 0

1/(x^1) = 0.22945966 // * x^1

1 = 0.22945966*x^1 // : 0.22945966

4.35806451 = x^1

x = 4.35806451

x = 4.35806451

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