ПОМОГИИИТЕЕЕЕЕЕ ПОЖАЛУЙСТАААААА !вычеслите:5/9+1целая5/7(4целых2/3-2целых5/8):1целую3/4 2)2-3целых1/7*(2-1целая9/11):8/21 3)2целых1/3+4целых1/10:(2целых7/15-5/12)*5/6 4) 4целых5/12-1целую1/2:(2целых1/6+8/15)*1целую4/15
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