482 488

482.

1. \(x = 17\,700 - 12\,605 = 5\,095\); проверка: \(5\,095 + 12\,605 = 17\,700\).
2. \(y = 47\,002 - 31\,409 = 15\,593\); проверка: \(31\,409 + 15\,593 = 47\,002\).
3. \(k = 45\,497 + 15\,391 = 60\,888\); проверка: \(60\,888 - 15\,391 = 45\,497\).
4. \(p = 12\,398 - 4\,597 = 7\,801\); проверка: \(12\,398 - 7\,801 = 4\,597\).

488.

1. \(x = 560 : 16 = 35\).
2. \(x = 182 \cdot 12 = 2\,184\).
3. \(x = 7\,936 : 31 = 256\).