7/x=28/20

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Solution for 7/x=28/20 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x = 28/20 // - 28/20

7/x-(28/20) = 0

7/x-7/5 = 0

7*x^-1 = 7/5 // : 7

x^-1 = 1/5

-1 < 0

1/(x^1) = 1/5 // * x^1

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

5 = x^1

x = 5

x = 5

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