5. 39:3·4 64:2·3 48:4·8 100−3·4 6·9+48:6 66:3·2−5 84−(48+26) 23+(75−48) 53−(53−40)

1. $$39:3 \cdot 4 = 13 \cdot 4 = 52$$
2. $$64:2 \cdot 3 = 32 \cdot 3 = 96$$
3. $$48:4 \cdot 8 = 12 \cdot 8 = 96$$
4. $$100 - 3 \cdot 4 = 100 - 12 = 88$$
5. $$6 \cdot 9 + 48:6 = 54 + 8 = 62$$
6. $$66:3 \cdot 2 - 5 = 22 \cdot 2 - 5 = 44 - 5 = 39$$
7. $$84 - (48 + 26) = 84 - 74 = 10$$
8. $$23 + (75 - 48) = 23 + 27 = 50$$
9. $$53 - (53 - 40) = 53 - 13 = 40$$

Ответ: 52, 96, 96, 88, 62, 39, 10, 50, 40