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Mathematics 18 Online
OpenStudy (anonymous):

x/3 minus 1/x

OpenStudy (solomonzelman):

\(\LARGE\color{blue}{ \frac{x}{3} \div \frac{1}{x} = \frac{x}{3} \times \frac{x}{1}=\frac{x^2}{3} }\)

OpenStudy (anonymous):

that is not an answer choice x-1/3-x 1/3 x^2-3/3x or 3x2/3x

OpenStudy (ipwnbunnies):

Did you type the problem out correctly?

OpenStudy (anonymous):

yes

jimthompson5910 (jim_thompson5910):

The goal is to get the denominators equal to the LCD 3x. Once they are, you can subtract the numerators and place that difference over the common denominator. \[\Large \frac{x}{3} - \frac{1}{x}\] \[\Large \frac{x}{3}{\color{red}{*\frac{x}{x}}} - \frac{1}{x}{\color{red}{*\frac{3}{3}}}\] \[\Large \frac{x^2}{3x} - \frac{3}{3x}\] \[\Large \frac{x^2-3}{3x}\]

OpenStudy (anonymous):

|dw:1406930742528:dw|

jimthompson5910 (jim_thompson5910):

seriously?

jimthompson5910 (jim_thompson5910):

It's posted by two different people

OpenStudy (anonymous):

im sorry wrong post

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