Пошаговое объяснение:
5. 1/7 : 6/7 = z : 12/17
6/7 * z = 5. 1/7 * 12/17
6/7z = 36/7 * 12/17
6/7z = 432/119
z = 432/119 : 6/7
z = 432/119 * 7/6
z = 72/17 * 1/1
z = 72/17
z = 4. 4/17
5 целых 1/7=36/7
36/7 : 6/7 = z : 12/17
36/6: 17z/12
6=17z/12
72/17=z
т.е Z=72/17 или 4 целые 4/17
Пошаговое объяснение:
5. 1/7 : 6/7 = z : 12/17
6/7 * z = 5. 1/7 * 12/17
6/7z = 36/7 * 12/17
6/7z = 432/119
z = 432/119 : 6/7
z = 432/119 * 7/6
z = 72/17 * 1/1
z = 72/17
z = 4. 4/17
5 целых 1/7=36/7
36/7 : 6/7 = z : 12/17
36/6: 17z/12
6=17z/12
72/17=z
т.е Z=72/17 или 4 целые 4/17