Question 66193
 Add and express in simplest form:
{{{5/4cd+11/4cd}}}
You were right except you don't add the denominators (bottom), you only add the numerators (top).
{{{(5+11)/4cd}}}
{{{16/4cd}}}
{{{4*4/4cd}}}
{{{cross(4)*4/(cross(4)*cd)}}}
{{{highlight(4/cd)}}}
Happy Calculating!!!