Answers

2014-07-20T17:16:41+08:00
3/4 +(-15/16
=    3/4 -15/16
       12/16 - 15/16
       - 3/16
0
2014-07-22T14:05:11+08:00
First, get the LCD (Least common denominator) of the two. => 16
12/16 - 15/16
-3/16
0