The sum of -1 and -1 is -2.
7/8 so far.
10 --- 21
8/15
5
The sum of -1 and -1 is -2.
31
seven eighths
8
The answer is six.
Two
7/8 so far.
There isn't one. A sum is the answer to an addition problem. It would have to be 296 plus something else to have a sum.
10 --- 21
8/15
5
The sum is 5/18