It's not. It depends on the method you use for summation whether summation > integral or integral > summation.
13 is what percent of 18 = 13 / 18 = 0.722222 or 72.2%
It is 18 - (-13) = 18 + 13 = 31
Sum or summation
A summation is a recap of all the highlights of a presentation.
6 Σn 2 What is n?? Please answer
13 is what percent of 18 = 13 / 18 = 0.722222 or 72.22%.
13
Summation means to sum up, or find the total.
5 + -13 + 18 = 5 - 13 + 18 = 10
18 + 13% = 18 x (1 + (13/100)) = 18 x 1.13 = 20.34
Since 13 is a prime number, and 18 is the LCM of 9 and 18, then 13*18 = 234 is the LCM of 13, 9, and 18.