25/4=100/x

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Solution for 25/4=100/x equation: 


D( x )

x = 0

x = 0

x = 0

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

25/4 = 100/x // - 100/x

25/4-(100/x) = 0

25/4-100*x^-1 = 0

-100*x^-1 = -25/4 // : -100

x^-1 = 1/16

-1 < 0

1/(x^1) = 1/16 // * x^1

1 = 1/16*x^1 // : 1/16

16 = x^1

x = 16

x = 16

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