(3 целых 1/5 +9,65):(2,71+2,29)+4,23
3 целых 1/5+9,65):(2,71+2,29)+4,23= =(3,2+9,65):5+4,23= =12,85:5+4,23= =2,57+4,23=6,8
(3 целых 1/5+9.65):(2.71+2.29)+4.23=6.81
(3.2 + 9.65)=12.85 2.71 +2.29=5 12.85 :5=2.57+4.24=6.81