18/100=20/x

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Solution for 18/100=20/x equation: 


D( x )

x = 0

x = 0

x = 0

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

18/100 = 20/x // - 20/x

18/100-(20/x) = 0

18/100-20*x^-1 = 0

-20*x^-1 = -9/50 // : -20

x^-1 = 9/1000

-1 < 0

1/(x^1) = 9/1000 // * x^1

1 = 9/1000*x^1 // : 9/1000

1000/9 = x^1

x = 1000/9

x = 1000/9

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