7 10/21-4 16/21 14 8/21-6. 8/31 (12 5/22+7 17/22)-(13 7/23-9 15/23) Решите

Question

7 10/21-4 16/21
14 8/21-6. 8/31
(12 5/22+7 17/22)-(13 7/23-9 15/23)
Решите

Answer 1

14 8/21 - 6 8/31 = 302/21 - 194/31 = (9362-4074) / 651=5288/651=8 80/651