А)(35=5х7, 8=2*3, 35 и 8 - взаимно простые, НОЗ(35,8)=35х8=280)
6/35=48/280
5/8=175/280
б) (34=2х17,51=3х17, НОЗ(34,51)=2х3х17=102)
21/34=63/102
22/51=44/102
в) (27=3*3, 36=2*2х3*2, НОЗ(27,36)=108
1/36=3/108
7/27=28/108
г) (12=2*2х3, 54=2х3*3, 81=3*4, НОЗ(12,54,81)=2*2х3*4=324)
5/12=135/324
7/54=42/324
4/81=16/324