Пошаговое объяснение:
(3 3/4×3/5-7 1/2÷27+1 2/9)÷(3 1/6-1 1/4)=1 2/3
3 3/4×3/5=15/4×3/5=9/4 7 1/2÷27=15/2÷27=15/2×1/27=5/18 9/4-5/18=81/36-10/36=71/36 71/36+1 2/9=71/36+11/9=71/36+44/36=115/36 3 1/6-1 1/4=19/6-5/4=38/12-15/12=23/12115/36÷23/12=115/36×12/23=5/3= 1 2/3...............................