1、2X+3>0
-3X+5>0
2、2X<-1
X+2>0
3、5X+6<3X
8-7X>4-5X
4、2(1+X)>3(X-7)
4(2X-3)>5(X+2)
5、2X<4
X+3>0
6、1-X>0
X+2<0
7、5+2X>3
X+2<8
8、2X+4<0
1/2(X+8)-2>0
9、5X-2≥3(X+1)
1/2X+1>3/2X-3
10、1+1/2X>2
2(X-3)≤4
1.5x+3x>2
2.-3y+9<7
3.9(7+x)<4
4.(3+8)x>6
5.5-3/1x>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).
回答人的补充2009-08-2314:061)66x+17y=3967
25x+y=1200
答案:x=48y=47
(2)18x+23y=2303
74x-y=1998
答案:x=27y=79
(3)44x+90y=7796
44x+y=3476
答案:x=79y=48
(4)76x-66y=4082
30x-y=2940
答案:x=98y=51
(5)67x+54y=8546
71x-y=5680
答案:x=80y=59
(6)42x-95y=-1410
21x-y=1575
答案:x=75y=48
(7)47x-40y=853
34x-y=2006
答案:x=59y=48
(8)19x-32y=-1786
75x+y=4950
答案:x=66y=95
(9)97x+24y=7202
58x-y=2900
答案:x=50y=98
(10)42x+85y=6362
63x-y=1638
答案:x=26y=62
(11)85x-92y=-2518
27x-y=486
答案:x=18y=44
(12)79x+40y=2419
56x-y=1176
答案:x=21y=19
(13)80x-87y=2156
22x-y=880
答案:x=40y=12
(14)32x+62y=5134
57x+y=2850
答案:x=50y=57
(15)83x-49y=82
59x+y=2183
答案:x=37y=61
(16)91x+70y=5845
95x-y=4275
答案:x=45y=25
(17)29x+44y=5281
88x-y=3608
答案:x=41y=93
(18)25x-95y=-4355
40x-y=2000
答案:x=50y=59
(19)54x+68y=3284
78x+y=1404
答案:x=18y=34
(20)70x+13y=3520
52x+y=2132
答案:x=41y=50
(21)48x-54y=-3186
24x+y=1080
答案:x=45y=99
(22)36x+77y=7619
47x-y=799
答案:x=17y=91
(23)13x-42y=-2717
31x-y=1333
答案:x=43y=78
(24)28x+28y=3332
52x-y=4628
答案:x=89y=30
(25)62x-98y=-2564
46x-y=2024
答案:x=44y=54
(26)79x-76y=-4388
26x-y=832
答案:x=32y=91
(27)63x-40y=-821
42x-y=546
答案:x=13y=41
(28)69x-96y=-1209
42x+y=3822
答案:x=91y=78
(29)85x+67y=7338
11x+y=308
答案:x=28y=74
(30)78x+74y=12928
14x+y=1218
答案:x=87y=83
(31)39x+42y=5331
59x-y=5841
答案:x=99y=35
(32)29x+18y=1916
58x+y=2320
答案:x=40y=42
(33)40x+31y=6043
45x-y=3555