4/x=2/10

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Solution for 4/x=2/10 equation: 


D( x )

x = 0

x = 0

x = 0

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

4/x = 2/10 // - 2/10

4/x-(2/10) = 0

4/x-1/5 = 0

4*x^-1 = 1/5 // : 4

x^-1 = 1/20

-1 < 0

1/(x^1) = 1/20 // * x^1

1 = 1/20*x^1 // : 1/20

20 = x^1

x = 20

x = 20

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