18 + = 36

+ 77 = 89

76 + = 92

+ 59 = 81

+ 32 = 49

45 + = 69

+ 35 = 56

34 + = 54

+ 59 = 82

+ 16 = 31

48 + = 61

56 + = 78

+ 23 = 42

+ 36 = 50