21-11-(     )=0

50-(     )-25=18

(     )-35-8=1

(     )-22-3=13

(     )-26-9=14

50-13-(     )=31

35-(     )-0=33

37-26-(     )=8

34-(     )-11=8

50-(     )-6=39

43-33-(     )=1

47-5-(     )=41

33-30-(     )=2

(     )-39-7=0

27-(     )-13=2

47-(     )-10=12

45-(     )-13=2

41-(     )-33=7

28-10-(     )=2

(     )-21-0=6

38-28-(     )=2

21-(     )-3=8

30-7-(     )=23

42-20-(     )=5

(     )-24-0=1

(     )-34-6=10

(     )-2-25=17

26-(     )-19=7

21-(     )-6=6

(     )-35-5=1

32-22-(     )=1

46-(     )-4=24

32-(     )-0=14

(     )-22-0=16

35-(     )-5=2

47-21-(     )=8

25-16-(     )=5

(     )-24-16=6

43-(     )-9=26

45-(     )-1=26

26-(     )-2=4

(     )-22-14=12

(     )-9-0=40

(     )-23-7=1

49-(     )-6=10

33-1-(     )=30

29-(     )-9=0

49-7-(     )=6

(     )-25-1=22

28-(     )-20=7