Dividing mixed numbers and fractions.

**nykhris22** · May 22nd 2011, 04:03 PM

I need steps and the answer of 20 and 1/4 divided 90

**Plato** · May 22nd 2011, 04:14 PM

This is 'poor' TeX rendering: $20{\raise0.5ex\hbox{$\scriptstyle 1$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 4$}} = \frac{{81}}{4}$
Now divide that by 90.

**nykhris22** · May 22nd 2011, 04:25 PM

Im really bad in mouth so how do i divide 81 over 4 by 90. Im still confused on this problem. Do i divide 81 by 4 and then divide that by 90?

**mr fantastic** · May 22nd 2011, 04:56 PM

Originally Posted by nykhris22

Im really bad in mouth so how do i divide 81 over 4 by 90. Im still confused on this problem. Do i divide 81 by 4 and then divide that by 90?

Here is a similar one. Learn from it:

$\frac{79}{3} \div 80 = \frac{79}{3} \div \frac{80}{1} = \frac{79}{3} \times \frac{1}{80} = \frac{79 \times 1}{3 \times 80} = \frac{79}{240}$

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