二元一次方程组习题及答案100道.pdf

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1、二元一次方程组 习题及答案 100 道 1.2x+9y=81 3x+y=34 2.9x+4y=35 8x+3y=30 3.7x+2y=52 7x+4y=62 4.4x+6y=54 9x+2y=87 5.2x+y=7 2x+5y=19 6.x+2y=21 3x+5y=56 7.5x+7y=52 5x+2y=22 8.5x+5y=65 7x+7y=203 9.8x+4y=56 x+4y=21 10.5x+7y=41 5x+8y=44 11.7x+5y=54 3x+4y=38 12.x+8y=15 4x+y=29 13.3x+6y=24 9x+5y=46 14.9x+2y=62 4x+3y=36 1

2、5.9x+4y=46 7x+4y=42 16.9x+7y=135 4x+y=41 17.3x+8y=51 x+6y=27 18.9x+3y=99 4x+7y=95 19.9x+2y=38 3x+6y=18 20.5x+5y=45 7x+9y=69 21.8x+2y=28 7x+8y=62 22.x+6y=14 3x+3y=27 23.7x+4y=67 2x+8y=26 24.5x+4y=52 7x+6y=74 25.7x+y=9 4x+6y=16 26.6x+6y=48 6x+3y=42 27.8x+2y=16 7x+y=11 28.4x+9y=77 8x+6y=94 29.6x+8y=68

3、7x+6y=66 30.2x+2y=22 7x+2y=47 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 30 x-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：

4、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)80 x-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)

5、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 40 x-y=2000 答案：x=50 y=59 (19)54x+68y=3284 78x+y=1404 答案：x=18 y=34 (20)70 x+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=761

6、9 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

7、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)40 x+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=3

8、6 (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 (41)75x+43y=8472 17x-y=1394 答案：x=82 y=54 (42)41x-38y=-1180 29x+y=1450 答案：x=50 y=85 (43)22x-59y=824 63x+y=4725 答案：x=75 y=14 (44)95x-56

9、y=-401 90 x+y=1530 答案：x=17 y=36 (45)93x-52y=-852 29x+y=464 答案：x=16 y=45 (46)93x+12y=8823 54x+y=4914 答案：x=91 y=30 (47)21x-63y=84 20 x+y=1880 答案：x=94 y=30 (48)48x+93y=9756 38x-y=950 答案：x=25 y=92 (49)99x-67y=4011 75x-y=5475 答案：x=73 y=48 (50)83x+64y=9291 90 x-y=3690 答案：x=41 y=92 (51)17x+62y=3216 75x-y=7

10、350 答案：x=98 y=25 (52)77x+67y=2739 14x-y=364 答案：x=26 y=11 (53)20 x-68y=-4596 14x-y=924 答案：x=66 y=87 (54)23x+87y=4110 83x-y=5727 答案：x=69 y=29 (55)22x-38y=804 86x+y=6708 答案：x=78 y=24 (56)20 x-45y=-3520 56x+y=728 答案：x=13 y=84 (57)46x+37y=7085 61x-y=4636 答案：x=76 y=97 (58)17x+61y=4088 71x+y=5609 答案：x=79 y

11、=45 (59)51x-61y=-1907 89x-y=2314 答案：x=26 y=53 (60)69x-98y=-2404 21x+y=1386 答案：x=66 y=71 (61)15x-41y=754 74x-y=6956 答案：x=94 y=16 (62)78x-55y=656 89x+y=5518 答案：x=62 y=76 (63)29x+21y=1633 31x-y=713 答案：x=23 y=46 (64)58x-28y=2724 35x+y=3080 答案：x=88 y=85 (65)28x-63y=-2254 88x-y=2024 答案：x=23 y=46 (66)43x+5

12、0y=7064 85x+y=8330 答案：x=98 y=57 (67)58x-77y=1170 38x-y=2280 答案：x=60 y=30 (68)92x+83y=11586 43x+y=3010 答案：x=70 y=62 (69)99x+82y=6055 52x-y=1716 答案：x=33 y=34 (70)15x+26y=1729 94x+y=8554 答案：x=91 y=14 (71)64x+32y=3552 56x-y=2296 答案：x=41 y=29 (72)94x+66y=10524 84x-y=7812 答案：x=93 y=27 (73)65x-79y=-5815 89

13、x+y=2314 答案：x=26 y=95 (74)96x+54y=6216 63x-y=1953 答案：x=31 y=60 (75)60 x-44y=-352 33x-y=1452 答案：x=44 y=68 (76)79x-45y=510 14x-y=840 答案：x=60 y=94 (77)29x-35y=-218 59x-y=4897 答案：x=83 y=75 (78)33x-24y=1905 30 x+y=2670 答案：x=89 y=43 (79)61x+94y=11800 93x+y=5952 答案：x=64 y=84 (80)61x+90y=5001 48x+y=2448 答案：

14、x=51 y=21 (81)93x-19y=2 86x-y=1548 答案：x=18 y=88 (82)19x-96y=-5910 30 x-y=2340 答案：x=78 y=77 (83)80 x+74y=8088 96x-y=8640 答案：x=90 y=12 (84)53x-94y=1946 45x+y=2610 答案：x=58 y=12 (85)93x+12y=9117 28x-y=2492 答案：x=89 y=70 (86)66x-71y=-1673 99x-y=7821 答案：x=79 y=97 (87)43x-52y=-1742 76x+y=1976 答案：x=26 y=55 (

15、88)70 x+35y=8295 40 x+y=2920 答案：x=73 y=91 (89)43x+82y=4757 11x+y=231 答案：x=21 y=47 (90)12x-19y=236 95x-y=7885 答案：x=83 y=40 (91)51x+99y=8031 71x-y=2911 答案：x=41 y=60 (92)37x+74y=4403 69x-y=6003 答案：x=87 y=16 (93)46x+34y=4820 71x-y=5183 答案：x=73 y=43 (94)47x+98y=5861 55x-y=4565 答案：x=83 y=20 (95)30 x-17y=239 28x+y=1064 答案：x=38 y=53 (96)55x-12y=4112 79x-y=7268 答案：x=92 y=79 (97)27x-24y=-450 67x-y=3886 答案：x=58 y=84 (98)97x+23y=8119 14x+y=966 答案：x=69 y=62 (99)84x+53y=11275 70 x+y=6790 答案：x=97 y=59 (100)51x-97y=297 19x-y=1520 答案：x=80 y=39