8/x=40/20

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Solution for 8/x=40/20 equation: 


D( x )

x = 0

x = 0

x = 0

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

8/x = 40/20 // - 40/20

8/x-(40/20) = 0

8/x-2 = 0

8*x^-1 = 2 // : 8

x^-1 = 1/4

-1 < 0

1/(x^1) = 1/4 // * x^1

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

4 = x^1

x = 4

x = 4

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