Answer:
1. -5
2.10
3.1
4.-10
5.18
6.10
7.4
8.-1
9.1
10.89
11.3
12.10
13.13
14.-2
15.-7
16.14
17.-8
18.-6
19.-8
20.-22
Explanation:
3.4m questions
4.3m answers