6+11+3+50-5-47+9+20

Решение:

\( 6 + 11 + 3 + 50 - 5 - 47 + 9 + 20 \)

1. \( 6 + 11 = 17 \)
2. \( 17 + 3 = 20 \)
3. \( 20 + 50 = 70 \)
4. \( 70 - 5 = 65 \)
5. \( 65 - 47 = 18 \)
6. \( 18 + 9 = 27 \)
7. \( 27 + 20 = 47 \)

Ответ: 47