18 + d
118
Unless the values of the things will no be know things, then the sum will also not be known
13, 3, and 2
6 + 18 + 20 = 44
Eighteen
4m/5 + 18
4*m/5 + 18
Consecutive even numbers that sum to thirty-eight (38) are eighteen (18) and twenty (20). Twenty (20) is larger than eighteen (18).
the sum means to add so its d+7
9+9= 18 If that is what you mean
The sum of 18 and 15 is 33. 10+10=20 & 8+5=13. 20+13=33.
a + d