Question 833591
(9 1/2)-(7 2/5)
<pre>
Two ways to do it:

First way:  Put the second under the first, get least
common denominator then subtract whole parts and fraction
parts.   That's the best way:

{{{matrix(4,3,9&1/2,  ""="", 9&5/10, -7&2/5, ""="", -7&4/10,"-----","","-----",  "",     "",  2&1/10)}}}


Here's the other way:

{{{(9&1/2)-(7&2/5)}}} {{{""=""}}} {{{19/2}}}{{{""-""}}}{{{37/5}}} {{{""=""}}} {{{(19*5)/(2*5)}}}{{{""-""}}}{{{(37*2)/(5*2)}}} {{{""=""}}} {{{95/10}}}{{{""-""}}}{{{74/10}}} {{{""=""}}} {{{21/10}}}{{{""=""}}}{{{2&1/10}}}

Edwin</pre>