The sum is: 8
It is: 8+1+7 = 16
The sum is 1511.
1+2+4 = 7
-1
The sum of -7 and -8 is -15.
The sum of 7 and -8 is -1.
X=(49+7)+1x=56+1x=57
The sum of 7 plus 71 is 77.
SUM means plus 4+7=11
The sum of 7/9 and 1/5 is 44/45.
-1
Finding the sum of numbers means adding them. So: 6 + 1 =7 The sum of six and one is seven.