Пошаговое объяснение:
3. 2/3 - 2. 1/2 : х = 1. 1/2
2. 1/2 : х = 3. 2/3 - 1. 1/2
2. 1/2 : х = 3. 4/6 - 1. 3/6
2. 1/2 : х = 2. 1/6
х = 2. 1/2 : 2. 1/6
х = 5/2 : 13/6
х = 5/2 * 6/13
х = 30/26
х = 15/13
х = 1. 2/13
3/8 * х + х = 1. 1/4
3/8х + х = 1. 1/4
1. 3/8х = 1. 1/4
11/8х = 5/4
х = 5/4 : 11/8
х = 5/4 * 8/11
х = 5/1 * 2/11
х = 10/11
7. 4/9 * х + 1. 2/3 = 7. 1/4
7. 4/9х + 1. 2/3 = 7. 1/4
7. 4/9х = 7. 1/4 - 1. 2/3
7. 4/9х = 7. 3/12 - 1. 8/12
7. 4/9х = 6. 15/12 - 1. 8/12
7. 4/9х = 5. 7/12
67/9х = 67/12
х = 67/12 : 67/9
х = 67/12 * 9/67
х = 9/12
х = 3/4
15. 4/5х - 2. 2/3 = 3. 5/6
15. 4/5х = 3. 5/6 + 2. 2/3
15. 4/5х = 3. 5/6 + 2. 4/6
15. 4/5х = 5. 9/6
79/5х = 39/6
79/5 = 13/2
х = 13/2 : 79/5
х = 13/2 * 5/79
х = 65/158
1)
2)
3}
4)
Пошаговое объяснение:
3. 2/3 - 2. 1/2 : х = 1. 1/2
2. 1/2 : х = 3. 2/3 - 1. 1/2
2. 1/2 : х = 3. 4/6 - 1. 3/6
2. 1/2 : х = 2. 1/6
х = 2. 1/2 : 2. 1/6
х = 5/2 : 13/6
х = 5/2 * 6/13
х = 30/26
х = 15/13
х = 1. 2/13
3/8 * х + х = 1. 1/4
3/8х + х = 1. 1/4
1. 3/8х = 1. 1/4
11/8х = 5/4
х = 5/4 : 11/8
х = 5/4 * 8/11
х = 5/1 * 2/11
х = 10/11
7. 4/9 * х + 1. 2/3 = 7. 1/4
7. 4/9х + 1. 2/3 = 7. 1/4
7. 4/9х = 7. 1/4 - 1. 2/3
7. 4/9х = 7. 3/12 - 1. 8/12
7. 4/9х = 6. 15/12 - 1. 8/12
7. 4/9х = 5. 7/12
67/9х = 67/12
х = 67/12 : 67/9
х = 67/12 * 9/67
х = 9/12
х = 3/4
15. 4/5х - 2. 2/3 = 3. 5/6
15. 4/5х = 3. 5/6 + 2. 2/3
15. 4/5х = 3. 5/6 + 2. 4/6
15. 4/5х = 5. 9/6
79/5х = 39/6
79/5 = 13/2
х = 13/2 : 79/5
х = 13/2 * 5/79
х = 65/158
1)
2)
3}
4)