Question 1129165
<pre>
{{{(7/x+4/y)/(2/x)}}}

The least common denominator of all three fractions, top and bottom, is xy, so
multiply every term in numerator and denominator by {{{(x*y/1)}}}:

{{{((x*y/1)expr(7/x)+(x*y/1)expr(4/y))/((x*y/1)expr(2/x))}}}

{{{((cross(x)y/1)expr(7/cross(x))+(x*cross(y)/1)expr(4/cross(y)))/((cross(x)*y/1)expr(2/cross(x)))}}}

      {{{(7y+4x)/(2y)}}}

Edwin</pre>