2-(     )+18=19

13-(     )+15=16

(     )+1-0=20

4-3+(     )=15

8-(     )+17=18

20+(     )-0=20

14-(     )+5=5

(     )+3-1=19

(     )-1+11=14

(     )-18+2=4

7-5+(     )=19

1+11-(     )=10

5+(     )-6=10

17+2-(     )=19

19+1-(     )=20

6-(     )+17=18

1-(     )+12=12

(     )-0+1=12

7+(     )-4=8

15+3-(     )=17

1-1+(     )=14

13-(     )+14=19

(     )-9+2=13

17+(     )-0=17

(     )-12+11=12

0+(     )-7=7

4+(     )-13=5

1-1+(     )=17

(     )+3-3=16

1+(     )-3=8

(     )+17-11=9

(     )-9+18=19

18+(     )-1=18

16-(     )+6=16

(     )-7+8=19

(     )-0+2=12

2+16-(     )=4

(     )+5-3=17

8-0+(     )=15

(     )-3+10=12

1-0+(     )=16

20+0-(     )=20

13-4+(     )=12

(     )+15-9=6

15+(     )-1=15

12+(     )-5=14

2+16-(     )=4

10+(     )-6=12

19-13+(     )=8

11+(     )-4=16