4целых 5 23 + икс = 10 целых 2 23
4 5/23 + x = 10 2/23 x = 10 2/23 - 4 5/23 x = 9 25/23 - 4 5/23 x =5 20/23 ————————- Проверка 4 5/23 + 5 20/23 = 10 2/23 9 25/23 = 10 2/23 10 2/23 = 10 2/23