(     )-8=5

13+(     )=14

(     )-7=12

12+(     )=17

16+(     )=20

2+(     )=12

(     )-1=19

15-(     )=1

(     )-8=8

16+(     )=17

(     )-12=5

18-(     )=3

11-(     )=11

(     )+10=16

18-(     )=11

19-(     )=2

(     )-15=1

(     )-6=14

(     )-14=0

(     )-16=3

9+(     )=16

(     )+0=18

(     )+0=16

(     )-1=10

16-(     )=15

8+(     )=15

(     )+3=20

14+(     )=18

9+(     )=11

(     )+15=16

(     )-10=3

(     )+1=12

(     )-12=3

18+(     )=18

20-(     )=15

1+(     )=18

9+(     )=11

5+(     )=19

(     )+4=15

17-(     )=14

(     )+3=19

(     )+10=19

(     )-8=12

(     )-13=1

(     )+3=20

(     )-5=11

(     )-13=4

14+(     )=16

(     )-6=7

(     )-0=12