Question

79+28
38+27
23+66
73+27
62-23
29-23
27-23
37-23

Answer 1

79+28=107
38+27=65
73+27=100
62-23=39
29-23=6
27-23=4
37-23=14

Answer 2

79+28=107
38+27=65
23+66=89
73+27=99
62-23=39
27-23=4
37-23=15