АЛГЕБРА?? сос дз Кароче нужно решить примеры вот так
1) 2 1/17 * 1 1/2
2) 5 1/3 * 3
3)4 2/3 + 4 1/6
4) 5 6/7 : 2 13/14
5) 3/4 : 3 1/2
6) 1- 4/5
7) 3 5/11 + 4 5/6
8) 3 7/10 - 1 8/15

Предыдущий
вопрос Следующий
вопрос

1) 2 1/17 1 1/2 = (2 + 1/17) (1 + 1/2) = 2 + 1/2 + 1/34 + 1/34 = 2 17/34 + 1 17/34 = 3 1/2

2) 5 1/3 3 = (5 + 1/3) 3 = 53 + 1/3 3 = 15 + 1 = 16

3) 4 2/3 + 4 1/6 = (4 + 2/3) + (4 + 1/6) = 4 + 4 + 2/3 + 1/6 = 8 + 2/3 + 1/6 = 8 + 4/6 + 1/6 = 8 5/6

4) 5 6/7 : 2 13/14 = (5 + 6/7) / (2 + 13/14) = (57 + 6) / (214 + 13) = (35 + 6) / (28 + 13) = 41 / 41 = 1

5) 3/4 : 3 1/2 = 3/4 / 7/2 = 3/4 * 2/7 = 6/28 = 3/14

6) 1 - 4/5 = 1 - 0.8 = 0.2

7) 3 5/11 + 4 5/6 = (3 + 5/11) + (4 + 5/6) = 3 + 4 + 5/11 + 5/6 = 7 + 5/11 + 5/6 = 7 + 30/66 + 55/66 = 7 85/66

8) 3 7/10 - 1 8/15 = (3 + 7/10) - (1 + 8/15) = 3 - 1 + 7/10 - 8/15 = 2 + 21/30 - 16/30 = 2 + 5/30 = 2 1/6