(     )+2+0=20

19+(     )+0=19

17+3+(     )=20

18+(     )+0=20

3+(     )+15=20

(     )-15-0=2

10+6+(     )=19

(     )-0-7=4

(     )-13-1=0

13-(     )-5=4

(     )-12-5=1

(     )-3-15=1

(     )+13+0=16

(     )+3+1=15

7+(     )+7=16

(     )-2-7=2

(     )+2+0=20

1+(     )+12=16

16+(     )+2=19

5+9+(     )=18

(     )+4+4=19

4+6+(     )=17

16+(     )+2=19

(     )+4+1=16

13+6+(     )=19

(     )+1+5=13

13-(     )-4=4

19-5-(     )=13

(     )-2-6=12

17+0+(     )=20

(     )+4+2=18

(     )-7-3=6

11-0-(     )=0

(     )+4+1=20

14-(     )-0=2

(     )-15-1=4

(     )+6+12=18

12+6+(     )=20

20-(     )-6=1

(     )-18-1=0

14-2-(     )=0

19-(     )-6=2

12-(     )-2=4

13-7-(     )=4

(     )+1+0=17

12+(     )+3=20

12-8-(     )=4

17+1+(     )=20

5+(     )+5=19

19-18-(     )=0