(     )-8=5

(     )+1=19

(     )+17=19

(     )+10=14

4+(     )=16

(     )+10=19

15+(     )=15

8+(     )=13

(     )+15=20

(     )-1=13

(     )+8=20

(     )+10=11

11-(     )=9

(     )+1=17

(     )-3=11

(     )+3=15

(     )-8=6

(     )+5=15

(     )+11=20

(     )+1=19

(     )-3=11

(     )-6=6

(     )-6=8

5+(     )=16

(     )-5=15

(     )-9=9

14-(     )=9

19-(     )=19

(     )-1=13

(     )-8=9

13-(     )=7

4+(     )=18

(     )-13=4

8+(     )=11

(     )+2=20

(     )-0=15

12-(     )=8

14-(     )=0

(     )+5=19

(     )+2=15

9+(     )=20

(     )-9=10

14+(     )=15

1+(     )=19

14-(     )=9

(     )-9=11

0+(     )=20

10+(     )=14

11-(     )=9

(     )-6=5