18/20=45/x

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Solution for 18/20=45/x equation: 


D( x )

x = 0

x = 0

x = 0

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

18/20 = 45/x // - 45/x

18/20-(45/x) = 0

18/20-45*x^-1 = 0

-45*x^-1 = -9/10 // : -45

x^-1 = 1/50

-1 < 0

1/(x^1) = 1/50 // * x^1

1 = 1/50*x^1 // : 1/50

50 = x^1

x = 50

x = 50

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