10+(     )=15

1+(     )=16

3+(     )=14

2+(     )=15

2+(     )=18

4+(     )=16

6+(     )=20

10+(     )=18

18+(     )=19

16+(     )=18

4+(     )=20

13+(     )=15

16+(     )=17

15+(     )=20

19+(     )=19

14+(     )=14

16+(     )=17

8+(     )=14

7+(     )=18

5+(     )=12

19+(     )=20

8+(     )=12

12+(     )=17

3+(     )=20

14+(     )=18

18+(     )=20

12+(     )=18

19+(     )=19

13+(     )=16

17+(     )=17

1+(     )=13

14+(     )=16

1+(     )=14

3+(     )=11

18+(     )=19

3+(     )=13

18+(     )=18

6+(     )=13

4+(     )=13

9+(     )=13

17+(     )=18

11+(     )=12

13+(     )=19

9+(     )=14

8+(     )=11

18+(     )=19

5+(     )=17

6+(     )=17

10+(     )=17

8+(     )=12