Номер 11 ,12,13 помогите прошу вас
11. 18.61/92-4.13/46+12.9/23=26.44/46 18.61/92-4.13/46=14.35/46 14.35/46+12.9/23=26.44/46 10/21:5/6-2/9×3/4=1/2 10/21:5/6=12/21 2/9×3/4=1/2 12/21-1/2=1/2 (2-7/10):(5/7+3/14)=21/75 2-7/10=3/10 5/7+3/14=13/14 3/10:13/14=21/75