18+0-(     )=18

(     )-2+5=17

(     )-2+6=18

(     )+5-0=16

1-(     )+19=19

(     )-8+15=15

18+0-(     )=18

(     )+18-8=10

(     )+16-3=15

6-6+(     )=12

3+16-(     )=5

6-1+(     )=19

(     )+10-2=11

(     )-15+11=16

15-3+(     )=14

0+15-(     )=10

4+(     )-1=19

(     )-12+3=11

(     )+4-0=12

8-8+(     )=17

1+(     )-6=13

10-(     )+11=11

(     )-2+10=17

(     )-0+14=15

19-(     )+0=16

9-4+(     )=17

(     )-12+1=2

15+5-(     )=19

18-7+(     )=16

0+12-(     )=2

14+0-(     )=14

7+9-(     )=15

3-3+(     )=19

20+0-(     )=20

(     )+12-6=14

13+(     )-3=17

4+11-(     )=15

(     )+9-7=11

(     )-7+7=12

17-(     )+7=9

(     )+4-3=15

8-5+(     )=16

6+13-(     )=11

6+5-(     )=11

9+(     )-1=18

17+1-(     )=18

2-(     )+15=16

14+(     )-3=16

11-11+(     )=0

13-0+(     )=19