1) 66x+17y=3967
25x+y=1200
答案：x=48 y=47
(2) 18x+23y=2303
74x-y=1998
答案：x=27 y=79
(3) 44x+90y=7796
44x+y=3476
答案：x=79 y=48
(4) 76x-66y=4082
30x-y=2940
答案：x=98 y=51
(5) 67x+54y=8546
71x-y=5680
答案：x=80 y=59
(6) 42x-95y=-1410
21x-y=1575
答案：x=75 y=48
(7) 47x-40y=853
34x-y=2006
答案：x=59 y=48
(8) 19x-32y=-1786
75x+y=4950
答案：x=66 y=95
(9) 97x+24y=7202
58x-y=2900
答案：x=50 y=98
(10) 42x+85y=6362
63x-y=1638
答案：x=26 y=62
(11) 85x-92y=-2518
27x-y=486
答案：x=18 y=44
(12) 79x+40y=2419
56x-y=1176
答案：x=21 y=19
(13) 80x-87y=2156
22x-y=880
答案：x=40 y=12
(14) 32x+62y=5134
57x+y=2850
答案：x=50 y=57
(15) 83x-49y=82
59x+y=2183
答案：x=37 y=61
(16) 91x+70y=5845
95x-y=4275
答案：x=45 y=25
(17) 29x+44y=5281
88x-y=3608
答案：x=41 y=93
(18) 25x-95y=-4355
40x-y=2000
答案：x=50 y=59
(19) 54x+68y=3284
78x+y=1404
答案：x=18 y=34
(20) 70x+13y=3520
52x+y=2132
答案：x=41 y=50
(21) 48x-54y=-3186
24x+y=1080
答案：x=45 y=99
(22) 36x+77y=7619
47x-y=799
答案：x=17 y=91
(23) 13x-42y=-2717
31x-y=1333
答案：x=43 y=78
(24) 28x+28y=3332
52x-y=4628
答案：x=89 y=30
(25) 62x-98y=-2564
46x-y=2024
答案：x=44 y=54
(26) 79x-76y=-4388
26x-y=832
答案：x=32 y=91
(27) 63x-40y=-821
42x-y=546
答案：x=13 y=41
(28) 69x-96y=-1209
42x+y=3822
答案：x=91 y=78
(29) 85x+67y=7338
11x+y=308
答案：x=28 y=74
(30) 78x+74y=12928
14x+y=1218
答案：x=87 y=83
(31) 39x+42y=5331
59x-y=5841
答案：x=99 y=35
(32) 29x+18y=1916
58x+y=2320
答案：x=40 y=42
(33) 40x+31y=6043
45x-y=3555
答案：x=79 y=93
(34) 47x+50y=8598
45x+y=3780
答案：x=84 y=93
(35) 45x-30y=-1455
29x-y=725
答案：x=25 y=86
(36) 11x-43y=-1361
47x+y=799
答案：x=17 y=36
(37) 33x+59y=3254
94x+y=1034
答案：x=11 y=49
(38) 89x-74y=-2735
68x+y=1020
答案：x=15 y=55
(39) 94x+71y=7517
78x+y=3822
答案：x=49 y=41
(40) 28x-62y=-4934
46x+y=552
答案：x=12 y=85
壹元壹次不等式
X^-X-6>0
2X^-3X-2>0
-3X^+6X>2
4X^-4X+1>0
X^-2X+3<0
(X+4)(X-1)<0
X-3/X+7<0
4X^-4X>15
14-4X^≥X
X(X+2)<X(3-X)+1
-X^-2X+8≥0
(5-X)(X+4)<0
(X+7)(2-X)<0
(3X+2)(2X-1）<0
（1/2X-1)(5x+3)≥0
0<X^-X-2<4
2X^-3X+1<0
(2X+1)(4X-3)>0
-3X^+4X+4<0
0<4X^-11X-3<3
壹元壹次不等式組
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. 5-3/1 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)．
19.1+1/2X＞2
20.2（X-3）≤4