(28/x)=(45/200)

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Solution for (28/x)=(45/200) equation: 


D( x )

x = 0

x = 0

x = 0

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

28/x = 45/200 // - 45/200

28/x-(45/200) = 0

28/x-9/40 = 0

28*x^-1 = 9/40 // : 28

x^-1 = 9/1120

-1 < 0

1/(x^1) = 9/1120 // * x^1

1 = 9/1120*x^1 // : 9/1120

1120/9 = x^1

x = 1120/9

x = 1120/9

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