5. 3/4
Пошаговое объяснение:
1) 3. 1/4 + 2. 1/6 =
3. 3/12 + 2. 2/12 = 5. 5/12
2) 5. 5/12 : 2. 3/5 =
65/12 : 13/5 = 65/12 * 5/13 = 5/12 * 5/1 = 25/12 = 2. 1/12
3) 2/3 * 2. 1/4 = 2/3 * 9/4 = 1/1 * 3/2 = 3/2 = 1. 1/2
4) 2. 1/12 - 1. 1/2 + 5. 1/6 =
2. 1/12 - 1. 6/12 + 5. 2/12 =
1. 13/12 - 1. 6/12 + 5. 2/12 = 7/12 + 5. 2/12 = 5. 9/12 =
5. 3/4
Пошаговое объяснение:
1) 3. 1/4 + 2. 1/6 =
3. 3/12 + 2. 2/12 = 5. 5/12
2) 5. 5/12 : 2. 3/5 =
65/12 : 13/5 = 65/12 * 5/13 = 5/12 * 5/1 = 25/12 = 2. 1/12
3) 2/3 * 2. 1/4 = 2/3 * 9/4 = 1/1 * 3/2 = 3/2 = 1. 1/2
4) 2. 1/12 - 1. 1/2 + 5. 1/6 =
2. 1/12 - 1. 6/12 + 5. 2/12 =
1. 13/12 - 1. 6/12 + 5. 2/12 = 7/12 + 5. 2/12 = 5. 9/12 =
5. 3/4