Выполните деление 7-x/6:x-7/9 12-ab/5:ab-12/6

7 - х/6 : х - 7/9 = 7 - 1/6 - 7/9 = 109/18 = 6  1/1812 - ав/5 : ав - 12/6 = 12 - 1/5 -12/6 = 12 - 1/5 - 2 = 10 - 1/5 = 49/5 = 9  4/5