Ответ: 14
Пошаговое объяснение:
(7*3\15+14/45+2*5/9)*10 1/3-1 1/11*(8*4/3-7*3/4) / (3*4/7-1*7/4):3/28-1=
(21/45+14/45+10/45)*31/3-12/11*(32/12-21/12)/(12/28-7/28):3/28-1=
45/45*31/3-(12/11*11/12)/(5/28*28/3)-1=
31/3-1/(5/3-1)=10 1/3-1 / (1 2/3 -1)=
9 1/3 / 2/3= 28/3*3/2=14