1. Запишем числа от 19 до 10 по порядку:
19, 18, 17, 16, 15, 14, 13, 12, 11, 10.
2. Уменьшим 15 на 6:
\[ 15 - 6 = 9 \]
Ответ: 19, 18, 17, 16, 15, 14, 13, 12, 11, 10. 9.