(     )+12=80

(     )-68=29

(     )+6=86

23+(     )=99

(     )-9=63

73+(     )=91

25+(     )=67

56-(     )=15

75-(     )=52

(     )-20=32

71-(     )=7

65-(     )=17

67+(     )=91

(     )-9=50

31+(     )=63

(     )+4=89

81+(     )=92

52-(     )=25

(     )-50=29

(     )-27=40

(     )-38=41

62-(     )=62

78+(     )=93

99-(     )=27

17+(     )=58

6+(     )=67

50+(     )=82

62-(     )=13

(     )-43=41

(     )-17=80

(     )-80=16

51-(     )=47

65-(     )=27

(     )+14=53

60+(     )=78

(     )+7=80

88-(     )=82

64-(     )=23

21+(     )=74

(     )+56=98

(     )-45=27

(     )+5=63

78-(     )=39

59-(     )=21

(     )-32=54

61-(     )=10

(     )-13=61

73-(     )=51

67-(     )=41

45+(     )=99