1. 5x+3x＞2
2. -3y+9＜7
3. 9(7+x)＜4
4. (3+8)x＞6
5. 5-3/1 x＞5
6. 11x-5x＞3
7. -3a-9a＞11
8. -4a+9＞6
9. 33x+33＜1
10. 5b-9＜9b
11.6x+8＞3x+8
12.3x-7≥4x-42x-19＜7x+31．
13.．3x-2(9-x)＞3(7+2x)-(11-6x)．
15.2(3x-1)-3(4x+5)≤x-4(x-7)．
16．2(x-1)-x＞3(x-1)-3x-5．
17．3[y-2(y-7)]≤4y．
18．15-(7+5x)≤2x+(5-3x)．