1)3 целых 1/4+2 целых 1/6 : 2 целых 3/5= 2)712 целых : 89 целых+(9 целых 10/21- 5 целых 3/7)=
3)7/10:2 целых 1/2+1/3:5/24-22/25=
ПЛЕЕС, РЕШИТЕ)
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