58-29+42+6-10-9+18-9

Решение:

\( 58 - 29 + 42 + 6 - 10 - 9 + 18 - 9 \)

1. \( 58 - 29 = 29 \)
2. \( 29 + 42 = 71 \)
3. \( 71 + 6 = 77 \)
4. \( 77 - 10 = 67 \)
5. \( 67 - 9 = 58 \)
6. \( 58 + 18 = 76 \)
7. \( 76 - 9 = 67 \)

Ответ: 67