The sum of 16 and 18 is 34.
The sum of -18 and 39 is 21.
20, is the sum of 18 and 2.
The sum of 18, 6 and 6 is 30. That is, 18 + 6 + 6 = 30.
18 + 12 = 30
18 is the sum of the digits in 3,627 .You see, (3 + 6 + 2 + 7) = 18 .
the sum of 18 and a number equals 24
11
The sum of twenty and negative two is 18
The sum of 11 and 7 is 18.
-18
18 + 4 = 22