Two
The sum of -1 and -1 is -2.
You add 1 plus another one and you get 2
The sum is 1. 1/3 + 1/3 + 1/3 = 3/3 = 1
The sum of 1/2 and 1 1/2 is 2.
Finding the sum of numbers means adding them. So: 6 + 1 =7 The sum of six and one is seven.
The sum is 1 5/12
the sum of 1 plus 9 is 10 because 1+9
-1
0
The sum of 1 1/3 and 1/3 is 1 2/3
The sum of 1/6 and 1/8 is 7/24
The sum of 1/9 and 1/7 is 16/63