(62+19=81) 81-19=62
(90-8=82)82+8=90
(75+16=91)91-16=75
(44-19=25)25+19=44
(89-48=41)41+48=89
(60-34=26)26+34=60
(81-65=16)16+65=81
(73-56=17)17+56=73
(92-63=29)29+63=92
16+19=35
17+48=65
44+29=73
54+29=83
19+73=92
35+47=82
62-28=34
43-15=28
100-48=52