63+12-42=
63+12-42=33
48-26+18=
48-26+18=40
12+79-62=
12+79-62=29
24-16+40=
24-16+40=48
77-19-16=
77-19-16=42
72-54+12=
72-54+12=30
62-18+24=
62-18+24=68
77-65+6=
77-65+6=18