Simplifying

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April 14th 2012, 08:41 AM
vaironxxrd

Simplifying

How can I simplify the following...
$14-9/4^2- 2^3$
The test puts it exactly in this format I don't understand if it's to confuse me? Or I simply don't know my math very well.

Here I will use PEMDAS.

My solution
$14-\frac{9}{16}-8$

$\frac{14}{1}-\frac{9}{16}-8$

= $\frac{224}{16}-\frac{9}{16}-8$

= $\frac{215}{16}-\frac{128}{16}$

= $\frac{87}{16}$
or
= $5\frac{7}{16}$
April 14th 2012, 08:45 AM
emakarov

Re: Simplifying

This is correct.

Edit: A simpler way is

$14-\frac{9}{16}-8=6-\frac{9}{16}=5+\frac{16}{16}-\frac{9}{16}=5\frac{7}{16}$
April 14th 2012, 08:48 AM
vaironxxrd

Re: Simplifying

Quote:

Originally Posted by emakarov

This is correct.

Weird my sample test is not providing me the right answer.
Probably the test did not include the "NONE OF THESE" answer.

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