решение на фото ..............
Пошаговое объяснение:
а)
5. 5/9 + 2. 1/18 = 5. 10/18 + 2. 1/18 = 7. 11/18
б)
5. 7/24 - 3. 11/36 = 5. 21/72 - 3. 22/72 = 4. 93/72 - 3. 22/72 = 1. 71/72
в) 2. 9/26 + 3. 7/39 - 4. 7/13 =
2. 27/78 + 3. 14/78 - 4. 42/78 =
5. 41/78 - 4. 42/78 =
4. 126/78 - 4. 42/78 =
84/78 = 1. 6/78 = 1. 1/13
решение на фото ..............
Пошаговое объяснение:
а)
5. 5/9 + 2. 1/18 = 5. 10/18 + 2. 1/18 = 7. 11/18
б)
5. 7/24 - 3. 11/36 = 5. 21/72 - 3. 22/72 = 4. 93/72 - 3. 22/72 = 1. 71/72
в) 2. 9/26 + 3. 7/39 - 4. 7/13 =
2. 27/78 + 3. 14/78 - 4. 42/78 =
5. 41/78 - 4. 42/78 =
4. 126/78 - 4. 42/78 =
84/78 = 1. 6/78 = 1. 1/13