10/4=12.5/x

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Solution for 10/4=12.5/x equation: 


D( x )

x = 0

x = 0

x = 0

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

10/4 = 12.5/x // - 12.5/x

10/4-(12.5/x) = 0

10/4-12.5*x^-1 = 0

-12.5*x^-1 = -5/2 // : -12.5

x^-1 = 0.2

-1 < 0

1/(x^1) = 0.2 // * x^1

1 = 0.2*x^1 // : 0.2

5 = x^1

x = 5

x = 5

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