4/x=20/30

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Solution for 4/x=20/30 equation: 


D( x )

x = 0

x = 0

x = 0

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

4/x = 20/30 // - 20/30

4/x-(20/30) = 0

4/x-2/3 = 0

4*x^-1 = 2/3 // : 4

x^-1 = 1/6

-1 < 0

1/(x^1) = 1/6 // * x^1

1 = 1/6*x^1 // : 1/6

6 = x^1

x = 6

x = 6

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