生成一个25道数学题的练习卷，包括加减乘除和简单的代数式。
1. 15 ÷ 3 = ?
2. 7 × 3 = ?
3. (4 + 6) - 3 = ?
4. (5 × 2) + 3 = ?
5. 20 ÷ 4 = ?
6. 8 + 7 - 4 = ?
7. 4 × (6 - 2) = ?
8. 9 - 3 + 5 = ?
9. 3 × 7 + 2 = ?
10. 18 ÷ 2 - 4 = ?
11. 2x + 4 = 10, x = ?
12. 6x - 4 = 22, x = ?
13. 3x + 7 = 16, x = ?
14. 2x - 5 = 11, x = ?
15. (2 + 3) × (6 - 2) = ?
16. (10 × 3) - 8 = ?
17. 15 + 9 - 6 = ?
18. 18 ÷ 3 × 2 = ?
19. 7 × 3 - 4 = ?
20. 9 + 6 ÷ 2 = ?
21. 25 ÷ (5 - 2) = ?
22. 5(x + 2) = 35, x = ?
23. 4x ÷ 2 + 6 = 14, x = ?
24. 3x - 5 = 7x + 1, x = ?
25. 2(x + 3) - 5x = 10, x = ?