2-1/4 = 7-5/12 = 8-2 1/7 = 4-3 5/9 = 3 1/5-1 4/5 = 6 1/8-2 3/8 = 4 5/11-3 9/11 = 8 4/13-8/13=

Question

Мирон Лаврентьев

Математика

15 марта, 07:35

2-1/4 = 7-5/12 = 8-2 1/7 = 4-3 5/9 = 3 1/5-1 4/5 = 6 1/8-2 3/8 = 4 5/11-3 9/11 = 8 4/13-8/13=

+2

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Владимир Горбачев · Answer 1

2 - 1/4 = (2 * 4 - 1 * 1) / 4 = (8 - 1) / 4 = 7/4 = 1 3/4;

Ответ: 1 3/4.

7 - 5/12 = (7 * 12 - 5 * 1) / 12 = (84 - 5) / 12 = 79/12 = 6 7/12;

Ответ: 6 7/12.

8 - 2 1/7 = 8 - 15/7 = (8 * 7 - 15 * 1) / 7 = (56 - 15) / 7 = 41/7 = 5 6/7;

Ответ: 5 6/7.

4 - 3 5/9 = 4 - 32/9 = (4 * 9 - 32 * 1) / 9 = (36 - 32) / 9 = 4/9;

Ответ: 4/9.

3 1/5 - 1 4/5 = 16/5 - 9/5 = 7/5 = 1 2/5;

Ответ: 1 2/5.

6 1/8 - 2 3/8 = 49/8 - 19/8 = 30/8 = 15/4 = 3 3/4;

Ответ: 3 3/4.

4 5/11 - 3 9/11 = 49/11 - 42/11 = 7/11;

Ответ: 7/11.

8 4/13 - 8/13 = 108/13 - 8/13 = 100/13 = 7 9/13.

Ответ: 7 9/13.