8 ,
Пошаговое объяснение:
(11/2+13/5)*5/9=(55/10+25/10)*5/9=8*5/9=8
(7-2 5/16)* 4/25=(112/16- 37/16)*4/25=75/16*4/25= 75*4/16*25=3/4
8
, 
Пошаговое объяснение:
(11/2+13/5)*5/9=(55/10+25/10)*5/9=8*5/9=8
(7-2 5/16)* 4/25=(112/16- 37/16)*4/25=75/16*4/25= 75*4/16*25=3/4