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
1）3x(x+5)＞3x2+7
2）x-4 < 2x+1
3）3x+14 > 4(2x-9)
4）3x-7≥4x-4
5）2x-3x-3＜6
6）0.4(x-1)≥0.3-0.9x
7）x-4 < 2x+1
8）2x-6 < x-2
9）3×10x98
11）2x-3x+3＜6
12）2x-3x+1＜6
13）2x-3x+3＜1
14）2x-19＜7x+31
15）3x-2(9-x)＞3(7+2x)-(11-6x)
16）2(3x-1)-3(4x+5)≤x-4(x-7)
17）2(x-1)-x＞3(x-1)-3x-5
18）15-(7+5x)≤2x+(5-3x)
19）2X+3＞0
20）-3X+5＞0
21）5X+6＜3X
22）4（2X-3）＞5（X+2）
23）2X+4＜0
24）5X-2≥3（X+1）
25）2（X-3）≤4
26）5m-3>0
27）2x-3(x-1) > 6
28）6x-3(x-1) ≤12-2(x+2)
29）3(1-3x) < 4(x-1)
30）8-7x+1 > 2(3x-2)方程組弄那么大數(shù)干嘛