Question

初二数学题，答案好的话，有50分！（要有格式，最少要写出10道题，好的话还有分。）

1) 66x+17y=3967
25x+y=1200
(2) 18x+23y=2303
74x-y=1998
(3) 44x+90y=7796
44x+y=3476
(4) 76x-66y=4082
30x-y=2940
(5) 67x+54y=8546
71x-y=5680
(6) 42x-95y=-1410
21x-y=1575
(7) 47x-40y=853
34x-y=2006
(8) 19x-32y=-1786
75x+y=4950
(9) 97x+24y=7202
58x-y=2900
(10) 42x+85y=6362
63x-y=1638
(11) 85x-92y=-2518
27x-y=486
(12) 79x+40y=2419
56x-y=1176
(13) 80x-87y=2156
22x-y=880
(14) 32x+62y=5134
57x+y=2850
(15) 83x-49y=82
59x+y=2183
(16) 91x+70y=5845
95x-y=4275
(17) 29x+44y=5281
88x-y=3608
(18) 25x-95y=-4355
40x-y=2000
(19) 54x+68y=3284
78x+y=1404
(20) 70x+13y=3520
52x+y=2132
(21) 48x-54y=-3186
24x+y=1080
(22) 36x+77y=7619
47x-y=799
(23) 13x-42y=-2717
31x-y=1333
(24) 28x+28y=3332
52x-y=4628
(25) 62x-98y=-2564
46x-y=2024
(26) 79x-76y=-4388
26x-y=832
(27) 63x-40y=-821
42x-y=546
(28) 69x-96y=-1209
42x+y=3822
(29) 85x+67y=7338
11x+y=308
(30) 78x+74y=12928
14x+y=1218
(31) 39x+42y=5331
59x-y=5841
(32) 29x+18y=1916
58x+y=2320
(33) 40x+31y=6043
45x-y=3555
(34) 47x+50y=8598
45x+y=3780
(35) 45x-30y=-1455
29x-y=725
(36) 11x-43y=-1361
47x+y=799
(37) 33x+59y=3254
94x+y=1034
(38) 89x-74y=-2735
68x+y=1020
(39) 94x+71y=7517
78x+y=3822
(40) 28x-62y=-4934
46x+y=552
(41) 75x+43y=8472
17x-y=1394
(42) 41x-38y=-1180
29x+y=1450
(43) 22x-59y=824
63x+y=4725
(44) 95x-56y=-401
90x+y=1530
(45) 93x-52y=-852
29x+y=464
(46) 93x+12y=8823
54x+y=4914
(47) 21x-63y=84
20x+y=1880
(48) 48x+93y=9756
38x-y=950
(49) 99x-67y=4011
75x-y=5475
(50) 83x+64y=9291
90x-y=3690

Answer 1

66x+17y=3967
25x+y=1200

66x+17y=3967
425+17y=20400
两式相减得359x=16433
x约等于46

其他题类似（都是把一个未知数的系数化为一样，然后相加减）