Дроби, ! (2 4/9 +1 1/6)×1 4/5-3 1/9: 2 1/3 (2-1 7/12): (3/8-1/6)×3 1/4 (7/10-2/5)×(1/4+5/6): 6 1/2

(22/9+7/6)*9/5-28/9:7/3=22/9*9/5+7/6*9/5-4/3=22/5+21/10-4/3=132/30+63/30-40/30=155/30=5 5/30= 5 i 1/6
2) (24/12-19/12):(9/24-4/24)*13/4=5/12:5/24*13/4=2*13/4=13/2=6 i 1/2;

3) (7/10-4/10)*(3/12+10/12):13/2=3/10*13/12:13/2=3/10*1=3/10