Третьякова Тамара 1) (3 1/3 + 2,5) * (4,6 - 2 1/3)=(3 1/3 + 2 1/2)*(4 3/5 - 2 1/3)=(5+(2+3)/6) * (2+(9-5)/15)= 5 5/6 * 2 4/15=35/6 * 34/15=7/3 * 17/3=119/9=13 2/9; 2) (4,5 * 1 2/3 - 6,75) * (1 1/3)^3= (4 1/2 * 1 2/3 - 6 3/4) * (4/3)^3= (9/2 * 5/3 - 27/4) * (4/3)^3=(3/2 * 5/1 - 27/4) * (4/3)^3=(15/2 - 27/4) * (4/3)^3= (30-27)/4 * (4/3)^3 = 3/4 * 4/3 * (4/3)^2=16/9=1 7/9 .
