Answer:
A.6-5 B. 5-15 C.5-5 D.23-14 E.1-12 F. 15-2
1-4 14-1 9-8 5 - 1 3-10 10-2
G. (-)5-11 H.20-0 I. (-)3-11
1-15 20-0 0-1
Explanation:
ex a. top left cant be lower than 1 or 5 (so I put 6)
The top right can't be lower than 1
The bottom left can't be lower than -3