4.2/16.5=12.6/x

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Solution for 4.2/16.5=12.6/x equation: 


D( x )

x = 0

x = 0

x = 0

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

4.2/16.5 = 12.6/x // - 12.6/x

4.2/16.5-(12.6/x) = 0

4.2/16.5-12.6*x^-1 = 0

-12.6*x^-1 = -0.25454545 // : -12.6

x^-1 = 0.02020202

-1 < 0

1/(x^1) = 0.02020202 // * x^1

1 = 0.02020202*x^1 // : 0.02020202

49.5000005 = x^1

x = 49.5000005

x = 49.5000005

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