- Thread starter
- #1

- Thread starter CSmith
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- Thread starter
- #1

- Feb 5, 2012

- 1,621

Hi CSmith,i got =1/12

can someone give me a short way to do this because my answer is long

Can you tell us the method that you used? Your answer is correct.

Kind Regards,

Sudharaka.

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- #3

- Feb 5, 2012

- 1,621

Well, here is how I would do it.By finding the lcf

\begin{eqnarray}

|2^{-2}-3^{-1}|&=&\left|\frac{1}{4}-\frac{1}{3}\right|\\

&=&\left|\frac{3-4}{12}\right|\\

&=&\left|-\frac{1}{12}\right|\\

&=&\frac{1}{12}\\

\end{eqnarray}