The answer is -9. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
-16 + -2 + 7 = -11
7 + 2 + 6 + 1 = 16
7 + 33 + 16 + 22 = 78
23
(7)-(-3)+(16)-(8) = 18
-16
3p+7 = 16+2p 3p-2p = 16-7 p = 9
7/16
16?
16
-9
if you are talking about -16 plus 7 it is negative 9