31/13=51/x

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Solution for 31/13=51/x equation: 


D( x )

x = 0

x = 0

x = 0

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

31/13 = 51/x // - 51/x

31/13-(51/x) = 0

31/13-51*x^-1 = 0

-51*x^-1 = -31/13 // : -51

x^-1 = 31/663

-1 < 0

1/(x^1) = 31/663 // * x^1

1 = 31/663*x^1 // : 31/663

663/31 = x^1

x = 663/31

x = 663/31

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