2.8/4.8=7/x

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Solution for 2.8/4.8=7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

2.8/4.8 = 7/x // - 7/x

2.8/4.8-(7/x) = 0

2.8/4.8-7*x^-1 = 0

-7*x^-1 = -0.58333333 // : -7

x^-1 = 0.08333333

-1 < 0

1/(x^1) = 0.08333333 // * x^1

1 = 0.08333333*x^1 // : 0.08333333

12.00000048 = x^1

x = 12.00000048

x = 12.00000048

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