Question 913329
  5 1/4

- 4 3/8

I know the LCD is going to be 8, but after that I am lost. 
<pre>
{{{system(5&1/4,- 4&3/8)}}} = {{{system(5&2/8,- 4&3/8)}}} = <u>{{{system(4&10/8,- 4&3/8)}}}</u> = {{{highlight_green(7/8)}}}

OR

{{{5&1/4 - 4&3/8}}}
{{{21/4 - 35/8}}} ----- Converting mixed numbers to improper fractions
{{{42/8 - 35/8}}} ------ Changing {{{21/4}}} to improper fraction, with LCD, 8
{{{highlight_green(7/8)}}}