11/30-7/75=55/150-14/150=41/150

17/80+2 14/45= 153/720 + 2 224/720= 2 337/720

77/84-49/63=231/252-196/252=35/252=5/36

4 11/90 + 3 5/36=4 22/180 + 3 25/180= 7 47/180

Ответ:

Объяснение:

11/30-7/75= 41/150

17/80+ 2 14/45= 2 377/720

77/84- 49/63= 5/36

4 11/90+ 3 5/36= 7 47/180