1. Реши примеры: 72: 12 = 65: 13 = 136: 17 = 92: 23 = 96: 16 = 128: 16 = 90:6+36.7- (89 +49) : 3 =

Решение:

1. \( 72 : 12 = 6 \)
2. \( 65 : 13 = 5 \)
3. \( 136 : 17 = 8 \)
4. \( 92 : 23 = 4 \)
5. \( 96 : 16 = 6 \)
6. \( 128 : 16 = 8 \)
7. \( 90 : 6 + 36 \cdot 7 - (89 + 49) : 3 \)
8. \( 90 : 6 = 15 \)
9. \( 36 \cdot 7 = 252 \)
10. \( 89 + 49 = 138 \)
11. \( 138 : 3 = 46 \)
12. \( 15 + 252 - 46 = 267 - 46 = 221 \)

Ответ: 6, 5, 8, 4, 6, 8, 221.