Выполните действия (1-4/9):(1/3-1/4)
(1-4/9)=5/9 1/3-1/4=1/12 5/9:1/12=6 2/3
1) 1-4/9 = 5/9 2) 1/3-1/4 = 1/12 3) 5/9:1/12= 20/3 = 6 2/3