9.9:3 7.8:2 80-32:8: (80-32):8 80-32:(8 36+24:6

Решение:

9 \(\cdot\) 9 = 81; 81 \(\div\) 3 = 27

7 \(\cdot\) 8 = 56; 56 \(\div\) 2 = 28

32 \(\div\) 8 = 4; 80 - 4 = 76

80 - 32 = 48; 48 \(\div\) 8 = 6

80 - 32 = 48; 48 \(\div\) 8 = 6

24 \(\div\) 6 = 4; 36 + 4 = 40