19-13+(     )=6

14-0+(     )=14

11-(     )+6=6

(     )-10+1=9

(     )-13+2=6

6+9-(     )=6

3-(     )+9=11

16-(     )+1=17

4+(     )-8=10

16-(     )+9=15

8-3+(     )=12

17-15+(     )=5

13-3+(     )=16

13+(     )-2=13

9-(     )+13=13

1+(     )-13=6

(     )-6+5=14

18+(     )-2=18

3-(     )+18=19

13+7-(     )=15

12+(     )-1=13

12+1-(     )=12

19-(     )+3=12

15-15+(     )=7

9-3+(     )=18

(     )-4+12=15

4+9-(     )=7

14-(     )+6=14

11+3-(     )=14

13-12+(     )=16

1-0+(     )=14

12+(     )-1=15

(     )+15-4=12

7-(     )+8=14

1+13-(     )=2

2-(     )+18=19

(     )-4+10=19

16-(     )+0=10

6+(     )-4=14

9-7+(     )=14

2-2+(     )=15

5+12-(     )=13

4+7-(     )=8

(     )+3-2=17

1+13-(     )=8

4-0+(     )=15

9+8-(     )=14

20-(     )+0=20

8+(     )-8=8

12+(     )-0=16