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 September 13th, 2013, 05:48 AM #1 Newbie   Joined: Sep 2013 Posts: 3 Thanks: 0 help with equation. If 1/3 is subtracted from 3 times the reciprocal of a certain number, x, the result is 4. Which of the following equations determines the correct value x? 3/x-1/3=4. 1/3x-1/3=4. 3(-x)-1/3=4. 1/3-3/x=4 . 1/3-3x=4. Please help. Thanks.
 September 13th, 2013, 07:44 AM #2 Member   Joined: Apr 2013 Posts: 65 Thanks: 0 Re: help with equation. Number: x The reciprocal of x: 1/x 3 times the reciprocal of x: 3/x Substract 1/3 from 3/x: 3/x - 1/x which equals 4 Is that clear?
 September 13th, 2013, 09:00 AM #3 Senior Member     Joined: Jul 2012 From: DFW Area Posts: 642 Thanks: 99 Math Focus: Electrical Engineering Applications Re: help with equation. Did you mean 3/x - 1/3 = 4 ?
September 13th, 2013, 10:22 AM   #4
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Re: help with equation.

Quote:
 Originally Posted by jks Did you mean 3/x - 1/3 = 4 ?
Agree that is the answer; I think Drake simply made a typo.

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### 3(3x sobre 4 - 1) -2(x 3)<1

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