1 – 17
-16
(–14) + 2
-12
(–15) – 8
-23
19 + 12
31
5 – (–13)
18
(–20) + (–1)
-21
20 + (–19)
1
18 – (–6)
24
6 – 15
-9
(–4) – (–11)
7
(–2) + (–18)
-20
10 + 4
14
(–8) + 11
3
(–9) – 13
-22
(–17) – (–10)
-7
16 + (–5)
11