16+(     )=20

15+(     )=18

11+(     )=17

16+(     )=18

12+(     )=14

8+(     )=19

5+(     )=16

16+(     )=20

9+(     )=17

11+(     )=17

9+(     )=17

10+(     )=20

18+(     )=18

5+(     )=11

5+(     )=20

19+(     )=20

12+(     )=14

5+(     )=15

9+(     )=18

16+(     )=16

5+(     )=16

13+(     )=19

11+(     )=16

3+(     )=17

7+(     )=12

15+(     )=15

15+(     )=15

13+(     )=14

13+(     )=14

3+(     )=12

17+(     )=18

19+(     )=20

13+(     )=20

19+(     )=20

5+(     )=15

0+(     )=18

9+(     )=15

19+(     )=20

16+(     )=16

17+(     )=17

18+(     )=18

12+(     )=13

17+(     )=19

9+(     )=13

19+(     )=20

3+(     )=18

18+(     )=20

1+(     )=11

10+(     )=11

3+(     )=12