5/7 + 3 целых 6/7 = 1 целая 6/11 - 7/11 = 9/15+7/15 = 9 целых - 3 целых 7/8 = 6 целых 6/13 - 5 целых 11/13 = 2 целых 15/19 + 1 целая 5/19 = 1 целая 5/7-6/7 = 19/21+9/21 = 9 целых 1/7-2 целых 5/7 6 целых 8/9 + 7 целых 5/9 = 6/7+5/7 = 5 целых 3/8-3 целых = 7 целых 9/17+8 целых 8/17 = 9 целых 3/13-8 целых 9/13 = 1 целая 6/11-7/11=

Question

Милана Осипова

Математика

14 марта, 09:55

5/7 + 3 целых 6/7 = 1 целая 6/11 - 7/11 = 9/15+7/15 = 9 целых - 3 целых 7/8 = 6 целых 6/13 - 5 целых 11/13 = 2 целых 15/19 + 1 целая 5/19 = 1 целая 5/7-6/7 = 19/21+9/21 = 9 целых 1/7-2 целых 5/7 6 целых 8/9 + 7 целых 5/9 = 6/7+5/7 = 5 целых 3/8-3 целых = 7 целых 9/17+8 целых 8/17 = 9 целых 3/13-8 целых 9/13 = 1 целая 6/11-7/11=

+3

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Дарья Спиридонова · Answer 1

5/7 + 3 6/7 = 5/7 + (3 * 7 + 6) / 7 = 5/7 + 27/7 = 32/7;

1 6/11 - 7/11 = 17/11 - 7/11 = 10/11;

9/15 + 7/15 = (9 + 7) / 5 = 16/5;

9 - 3 7/8 = 9 - (3 * 8 + 7) / 8 = 72/8 - 31/8 = 41/8;

6 6/13 - 5 11/13 = (6 * 13 + 6) / 13 - (5 * 13 + 11) / 13 = 84/13 - 76/13 = 8/13;

2 15/19 + 1 5/19 = (2 * 19 + 15) / 19 + (1 * 19 + 5) / 19 = 53/19 + 24/19 = 77/19;

1 5/7 - 6/7 = 12/7 - 6/7 = 6/7;

19/21 + 9/21 = 28/21 = 4/3;

9 1/7 - 2 5/7 = 64/7 - 19/7 = 45/7;

6 8/9 + 7 5/9 = 62/9 + 68/9 = 130/9;

6/7 + 5/7 = 11/7;

5 3/8 - 3 = 43/8 - 24/8 = 19/8;

7 9/17 + 8 8/17 = 128/17 + 144/17 = 272/17 = 16;

9 3/13 - 8 9/13 = 120/13 - 113/13 = 7/13;

1 6/11 - 7/11 = 17/11 - 7/11 = 10/11.