第1个回答 2012-02-10
横着的每两题一道
{x+y=180, (x+y=180 {x+y=180 {x+y=180 {5x-4=7y+1/3+5x { x+3y=2
{x=25%y {y=25%x {x-y=25% {y-x=25% {4x+1=x- y {2x-5=y
x+y=6 2x-4y=7 x+1/2y=3 x+4y/2=6 x+y=180, x+y=180
x/3-y/3=-1/2 2x+3y=5 2x-1=0 x+y=-2 2x-y=3 y=6
x+y=-1 2x+2y=-2 x+y=7 3x+y=17 接下来的一题一道
4x+y=20 x+y=5 x-y=-1 x+y=9 5x+3y=33 2x+3y=100
答案：1.x=36 y=144 2.x=144 y=36 3.x=721/8 y=719/8 4.x=719/8 y=721/8 5.
5.x= -63/8 y=-13/21 6.x=17/7 y=-3/7 7.x=31/6 y=5/6
第2个回答 2012-02-10
*(51) 62x+79y=9108
37x-y=2701
答案：x=73 y=58
*(52) 15x+81y=7239
87x-y=7221
答案：x=83 y=74
*(53) 95x+79y=9624
57x-y=5016
答案：x=88 y=16
*(54) 66x-35y=2137
34x-y=1768
答案：x=52 y=37
*(55) 92x+98y=15400
72x-y=4536
答案：x=63 y=98
*(56) 71x+19y=3301
62x-y=1240
答案：x=20 y=99
*(57) 37x-95y=-93
37x+y=1332
答案：x=36 y=15
(58) 25x-47y=-300
47x+y=1645
答案：x=35 y=25
(59) 27x-51y=330
18x+y=1206
答案：x=67 y=29
(60) 36x+66y=5784
67x+y=5360
答案：x=80 y=44
(61) 92x-59y=1272
13x+y=780
答案：x=60 y=72
(62) 56x+47y=6561
42x+y=2982
答案：x=71 y=55
(63) 16x+54y=5804
43x+y=1376
答案：x=32 y=98
(64) 59x-69y=-2607
94x+y=3102
答案：x=33 y=66
(65) 51x+85y=7820
64x+y=1280
答案：x=20 y=80
(66) 40x-58y=-480
11x-y=187
答案：x=17 y=20
(67) 28x+42y=3108
51x-y=4284
答案：x=84 y=18
(68) 18x+52y=4690
46x+y=4278
答案：x=93 y=58
(69) 63x+19y=2881
93x+y=3720
答案：x=40 y=19
(70) 35x+19y=4543
33x+y=2904
答案：x=88 y=77
(71) 31x+41y=4028
33x+y=2673
答案：x=81 y=37
(72) 63x-40y=-1653
93x+y=2697
答案：x=29 y=87
(73) 96x+66y=9534
93x+y=6231
答案：x=67 y=47
(74) 99x-41y=4017
13x-y=689
答案：x=53 y=30
(75) 86x-75y=1463
70x+y=4060
答案：x=58 y=47
(76) 72x-59y=1187
48x-y=2640
答案：x=55 y=47
(77) 31x-71y=-2457
54x+y=2646
答案：x=49 y=56
(78) 24x+63y=3219
30x-y=1110
答案：x=37 y=37
(79) 71x+80y=5923
65x-y=3445
答案：x=53 y=27
(80) 16x+44y=4688
81x+y=2349
答案：x=29 y=96
(81) 15x+60y=1875
58x+y=1218
答案：x=21 y=26
(82) 46x-18y=2156
77x-y=5929
答案：x=77 y=77
(83) 46x-82y=-3466
98x+y=1176
答案：x=12 y=49
(84) 42x-21y=2457
95x+y=7220
答案：x=76 y=35
(85) 17x+59y=1933
96x-y=1920
答案：x=20 y=27
(86) 46x-23y=368
55x-y=1650
答案：x=30 y=44
(87) 69x-16y=2684
72x-y=4320
答案：x=60 y=91
(88) 30x-15y=1290
80x-y=4400
答案：x=55 y=24
(89) 97x-91y=4405
71x+y=5822
答案：x=82 y=39
(90) 81x+12y=2841
46x+y=966
答案：x=21 y=95本回答被网友采纳