4.5/7=19.8/x

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Solution for 4.5/7=19.8/x equation: 


D( x )

x = 0

x = 0

x = 0

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

4.5/7 = 19.8/x // - 19.8/x

4.5/7-(19.8/x) = 0

4.5/7-19.8*x^-1 = 0

-19.8*x^-1 = -0.64285714 // : -19.8

x^-1 = 0.03246753

-1 < 0

1/(x^1) = 0.03246753 // * x^1

1 = 0.03246753*x^1 // : 0.03246753

30.80000234 = x^1

x = 30.80000234

x = 30.80000234

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