(     )+12=15

10+(     )=14

18+(     )=20

(     )+8=20

1+(     )=14

(     )+1=19

10+(     )=16

(     )+0=17

3+(     )=15

(     )+12=17

13+(     )=18

(     )+7=18

(     )+10=18

(     )+1=19

(     )+10=20

9+(     )=11

18+(     )=19

(     )+4=11

8+(     )=19

12+(     )=20

11+(     )=17

17+(     )=20

(     )+5=13

(     )+15=20

1+(     )=15

11+(     )=13

(     )+18=20

8+(     )=14

(     )+11=18

9+(     )=20

19+(     )=19

(     )+7=19

18+(     )=20

16+(     )=20

9+(     )=15

(     )+13=19

17+(     )=18

(     )+3=14

9+(     )=19

(     )+10=10

7+(     )=17

(     )+12=12

18+(     )=20

2+(     )=11

4+(     )=11

15+(     )=16

(     )+1=12

7+(     )=18

4+(     )=14

5+(     )=16