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absolute value

CSmith

Member
Aug 22, 2012
41
i got =1/12

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

Sudharaka

Well-known member
MHB Math Helper
Feb 5, 2012
1,621
Re: abdolute value

i got =1/12

can someone give me a short way to do this because my answer is long
Hi CSmith, :)

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

Kind Regards,
Sudharaka.
 

CSmith

Member
Aug 22, 2012
41
Re: abdolute value

By finding the lcf
 

Sudharaka

Well-known member
MHB Math Helper
Feb 5, 2012
1,621
Re: abdolute value

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

\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}