57 + 45 = 10252 - 5 = 4766 - 58 = 824 + 28 = 5277 + 7 = 8441 + 43 = 8434 + 100 = 13423 + 28 = 5112 + 122 = 13456 - 21 = 35
57 + 45 = 102
52 - 5 = 47
66 - 58 = 8
24 + 28 = 52
77 + 7 = 84
41 + 43 = 84
34 + 100 = 134
23 + 28 = 51
12 + 122 = 134
56 - 21 = 35