8+(     )=17

(     )-11=4

(     )+0=18

3+(     )=18

(     )+4=14

(     )-11=8

2+(     )=15

14+(     )=15

(     )+7=15

(     )-10=9

(     )-6=14

(     )+9=17

(     )-1=19

(     )+13=20

(     )+1=14

(     )+2=20

(     )-10=2

17-(     )=3

(     )-7=13

(     )+6=12

18-(     )=4

0+(     )=18

(     )-18=2

11+(     )=14

11-(     )=5

18-(     )=14

(     )-4=9

(     )+2=13

7+(     )=16

(     )-7=9

(     )-13=5

(     )-7=6

16-(     )=8

20-(     )=8

11+(     )=15

(     )+10=12

(     )+2=19

(     )-10=10

13-(     )=5

12-(     )=0

(     )+1=19

18+(     )=18

18-(     )=3

19-(     )=5

(     )-8=12

(     )-8=5

(     )+14=20

16-(     )=8

(     )+3=19

4+(     )=19