7.2/21.6=16.8/x

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Solution for 7.2/21.6=16.8/x equation: 


D( x )

x = 0

x = 0

x = 0

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

7.2/21.6 = 16.8/x // - 16.8/x

7.2/21.6-(16.8/x) = 0

7.2/21.6-16.8*x^-1 = 0

-16.8*x^-1 = -0.33333333 // : -16.8

x^-1 = 0.01984127

-1 < 0

1/(x^1) = 0.01984127 // * x^1

1 = 0.01984127*x^1 // : 0.01984127

50.3999996 = x^1

x = 50.3999996

x = 50.3999996

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