The sum of -5 plus 11 is 6. When a negative is added to the positive you subtract instead of add to get your answer.
11
11(5 + 6) = (11 x 5) + (11 x 6) = 11 x 11 = 121
5/13 + 6/11 = = 133/143
simply 9
(5-8)+(1-11) 5-8+1-11 6-19 -13
The sum is 0.95 or 19/20
The sum of 75 plus 5 is 80.
SUM means plus 4+7=11
When the sum of a number plus 3 is squared, it is 11 more than the sum of the number plus 2 when squared.
'Sum' is pretty much a synonym for add, and 5+5 or 5 plus 5 is 10.
-11
-4