(12 5/22+7 17/22) - (13 7/23-9 15/23)
(/ дробь)

1) (12 5/22+7 17/22)-(13 7/23 - 9 15/23)=16 8/2312 5/22 +7 17/22= 269/22+171/22=440/22=2013 7/23 - 9 15/23 =306/23 - 222/23=84/23=3 15/2320- 3 15/23= 20/1 - 84/23=(460-84)/23=376/23=16 8/23