Выполни действия A 3/4-2/5 = 1/3+5/12 = 5/8-3/16 = 1/10+7/10 = 9/17+8/17 = 2/5-1/3 = 1/6+5/12 = 5/9-4/27 = 1/8+3/8 = 7/10-1/2 = 7/12+1/2 = 2/7+5/14 = 11/15-2/5 = 5/6-1/6 = 1/6+3/5

Question

Егор Глухов

Математика

7 декабря, 12:57

Выполни действия A 3/4-2/5 = 1/3+5/12 = 5/8-3/16 = 1/10+7/10 = 9/17+8/17 = 2/5-1/3 = 1/6+5/12 = 5/9-4/27 = 1/8+3/8 = 7/10-1/2 = 7/12+1/2 = 2/7+5/14 = 11/15-2/5 = 5/6-1/6 = 1/6+3/5

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Тиана · Answer 1

3/4 - 2/5 = (3 * 5 - 2 * 4) / 20 = (15 - 8) / 20 = 7/20;

1/3 + 5/12 = (1 * 4 + 5 * 1) / 12 = (4 + 5) / 12 = 9/12 = 3/4;

5/8 - 3/16 = (5 * 2 - 3 * 1) / 16 = (10 - 3) / 16 = 7/16;

1/10 + 7/10 = 8/10 = 4/5;

9/17 + 8/17 = 17/17 = 1;

2/5 - 1/3 = (2 * 3 - 1 * 5) / 15 = (6 - 5) / 15 = 1/15;

1/6 + 5/12 = (1 * 2 + 5 * 1) / 12 = (2 + 5) / 12 = 7/12;

5/9 - 4/27 = (5 * 3 - 4 * 1) / 27 = (15 - 4) / 27 = 11/27;

1/8 + 3/8 = 4/8 = 1/2;

7/10 - 1/2 = (7 * 1 - 1 * 5) / 10 = (7 - 5) / 10 = 2/10 = 1/5;

7/12 + 1/2 = (7 * 1 + 1 * 6) / 12 = (7 + 6) / 12 = 13/12 = 1 1/12;

2/7 + 5/14 = (2 * 2 + 5 * 1) / 14 = (4 + 5) / 14 = 9/14;

11/15 - 2/5 = (11 * 1 - 2 * 3) / 15 = (11 - 6) / 15 = 5/15 = 1/3;

5/6 - 1/6 = 4/6 = 2/3;

1/6 + 3/5 = (1 * 5 + 3 * 6) / 30 = (5 + 18) / 30 = 23/30.