Ответы на вопрос:
1) 11 2/3 - 8 3/4 = (11-8) +(2/3-3/4) = 3+ (8-9)/12 = 3 + (-1/12) = 2 12/12 - 1/12 = 2 11/12
2) 3 1/3 + 2 5/6 = (3+2) + (1/3+5/6) =5+(2+5)/6 =5 +7/6 = 5+1 1/6 = 6 1/6
3) 2 11/12+6 1/6-4 7/12 = (2+6-4) +(11/12+1/6-7/12) = 4 +(11+2-7)/12 = 4+6/12 = 4 1/2
1) 11 2/3- 8 3/4= 35/3-35/4=140/12-105/12=35/12 2)3 1/3+2 5/6= 10/3+17/6=20/6+17/6=37/6 3)35/12+37/6=35/12+74/12=109/12 4)109/12-4 7/12= 109/12--55/12=54/12=4 6/12 =4 1/2
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