3. Найдите неизвестное число:

Решение:

1. \( X + 84 248 = 105 000 \)
   \( X = 105 000 - 84 248 \)
   \( X = 20 752 \)
2. \( 70,23 - X = 22,02 \)
   \( X = 70,23 - 22,02 \)
   \( X = 48,21 \)
3. \( X + 8^{\frac{3}{7}} = 30^{\frac{5}{7}} \)
   \( X = 30^{\frac{5}{7}} - 8^{\frac{3}{7}} \)
4. \( X - 6^{\frac{9}{25}} = 1^{\frac{14}{25}} \)
   \( X = 1^{\frac{14}{25}} + 6^{\frac{9}{25}} \)

Ответ: X = 20752; X = 48,21; X = 30^5/7 - 8^3/7; X = 1^14/25 + 6^9/25.