Question 148531
Figure out {{{(a/b)+(b/c)}}}.  Times a/b by c/c and b/c by b/b.  Get {{{(ac/bc)+(b^2/bc)}}} Add the numerators and get {{{(ac+b^2)/bc}}}.


No do c/d+d/e.  Same pattern, so you will get {{{(ce+d^2)/de}}}.  Flip this one and get {{{de/(ce+d^2)}}}.


Multiply the two new fractions together:
{{{((ac+b^2)/bc)(de/(ce+d^2))}}}.


And get {{{(ac+b^2(de))/(bc)(ce+d^2)}}}