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Math Help - Dividing mixed numbers and fractions.

  1. #1
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    Dividing mixed numbers and fractions.

    I need steps and the answer of 20 and 1/4 divided 90
    Last edited by mr fantastic; May 22nd 2011 at 04:58 PM. Reason: Re-titled.
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    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.
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    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?
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  4. #4
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    Quote Originally Posted by nykhris22 View Post
    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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