二元一次方程组习题及答案100道.docx

1、二元一次方程组习题及答案100道.二元一次方程组 习题及答案 100道1.2x+9y=813x+y=342.9x+4y=358x+3y=303.7x+2y=527x+4y=624.4x+6y=549x+2y=875.2x+y=72x+5y=196.x+2y=213x+5y=567.5x+7y=525x+2y=228.5x+5y=657x+7y=2039.8x+4y=56x+4y=2110.5x+7y=415x+8y=4411.7x+5y=543x+4y=3812.x+8y=154x+y=29.13.3x+6y=249x+5y=4614.9x+2y=624x+3y=3615.9x+4y=467x

2、+4y=4216.9x+7y=1354x+y=4117.3x+8y=51x+6y=2718.9x+3y=994x+7y=9519.9x+2y=383x+6y=1820.5x+5y=457x+9y=6921.8x+2y=287x+8y=6222.x+6y=143x+3y=2723.7x+4y=672x+8y=2624.5x+4y=527x+6y=7425.7x+y=9.4x+6y=1626.6x+6y=486x+3y=4227.8x+2y=167x+y=1128.4x+9y=778x+6y=9429.6x+8y=687x+6y=6630.2x+2y=227x+2y=471) 66x+17y=39

3、6725x+y=1200答案：x=48y=47(2) 18x+23y=230374x-y=1998答案：x=27y=79(3) 44x+90y=779644x+y=3476答案：x=79y=48(4) 76x-66y=408230x-y=2940答案：x=98y=51(5) 67x+54y=854671x-y=5680.答案：x=80y=59(6) 42x-95y=-141021x-y=1575答案：x=75y=48(7)47x-40y=85334x-y=2006答案：x=59y=48(8) 19x-32y=-178675x+y=4950答案：x=66y=95(9) 97x+24y=72025

4、8x-y=2900答案：x=50y=98(10) 42x+85y=636263x-y=1638答案：x=26y=62(11) 85x-92y=-251827x-y=486答案：x=18y=44(12) 79x+40y=241956x-y=1176答案：x=21y=19(13) 80x-87y=215622x-y=880答案：x=40y=12.(14) 32x+62y=513457x+y=2850答案：x=50y=57(15) 83x-49y=8259x+y=2183答案：x=37y=61(16) 91x+70y=584595x-y=4275答案：x=45y=25(17) 29x+44y=528

5、188x-y=3608答案：x=41y=93(18) 25x-95y=-435540x-y=2000答案：x=50y=59(19) 54x+68y=328478x+y=1404答案：x=18y=34(20) 70x+13y=352052x+y=2132答案：x=41y=50(21)48x-54y=-318624x+y=1080答案：x=45y=99(22)36x+77y=7619.47x-y=799答案：x=17y=91(23) 13x-42y=-271731x-y=1333答案：x=43y=78(24) 28x+28y=333252x-y=4628答案：x=89y=30(25) 62x-98

6、y=-256446x-y=2024答案：x=44y=54(26) 79x-76y=-438826x-y=832答案：x=32y=91(27) 63x-40y=-82142x-y=546答案：x=13y=41(28) 69x-96y=-120942x+y=3822答案：x=91y=78(29) 85x+67y=733811x+y=308答案：x=28y=74(30) 78x+74y=1292814x+y=1218.答案：x=87y=83(31) 39x+42y=533159x-y=5841答案：x=99y=35(32)29x+18y=191658x+y=2320答案：x=40y=42(33) 4

7、0x+31y=604345x-y=3555答案：x=79y=93(34) 47x+50y=859845x+y=3780答案：x=84y=93(35) 45x-30y=-145529x-y=725答案：x=25y=86(36) 11x-43y=-136147x+y=799答案：x=17y=36(37) 33x+59y=325494x+y=1034答案：x=11y=49(38) 89x-74y=-273568x+y=1020答案：x=15y=55.(39) 94x+71y=751778x+y=3822答案：x=49y=41(40) 28x-62y=-493446x+y=552答案：x=12y=85

8、(41) 75x+43y=847217x-y=1394答案：x=82y=54(42) 41x-38y=-118029x+y=1450答案：x=50y=85(43) 22x-59y=82463x+y=4725答案：x=75y=14(44) 95x-56y=-40190x+y=1530答案：x=17y=36(45) 93x-52y=-85229x+y=464答案：x=16y=45(46)93x+12y=882354x+y=4914答案：x=91y=30(47)21x-63y=84.20x+y=1880答案：x=94y=30(48) 48x+93y=975638x-y=950答案：x=25y=92(

9、49) 99x-67y=401175x-y=5475答案：x=73y=48(50) 83x+64y=929190x-y=3690答案：x=41y=92(51) 17x+62y=321675x-y=7350答案：x=98y=25(52) 77x+67y=273914x-y=364答案：x=26y=11(53) 20x-68y=-459614x-y=924答案：x=66y=87(54) 23x+87y=411083x-y=5727答案：x=69y=29(55) 22x-38y=80486x+y=6708.答案：x=78y=24(56) 20x-45y=-352056x+y=728答案：x=13y=

10、84(57)46x+37y=708561x-y=4636答案：x=76y=97(58) 17x+61y=408871x+y=5609答案：x=79y=45(59) 51x-61y=-190789x-y=2314答案：x=26y=53(60) 69x-98y=-240421x+y=1386答案：x=66y=71(61) 15x-41y=75474x-y=6956答案：x=94y=16(62) 78x-55y=65689x+y=5518答案：x=62y=76(63) 29x+21y=163331x-y=713答案：x=23y=46.(64) 58x-28y=272435x+y=3080答案：x=8

11、8y=85(65) 28x-63y=-225488x-y=2024答案：x=23y=46(66) 43x+50y=706485x+y=8330答案：x=98y=57(67) 58x-77y=117038x-y=2280答案：x=60y=30(68) 92x+83y=1158643x+y=3010答案：x=70y=62(69) 99x+82y=605552x-y=1716答案：x=33y=34(70) 15x+26y=172994x+y=8554答案：x=91y=14(71)64x+32y=355256x-y=2296答案：x=41y=29(72)94x+66y=10524.84x-y=7812

12、答案：x=93y=27(73) 65x-79y=-581589x+y=2314答案：x=26y=95(74) 96x+54y=621663x-y=1953答案：x=31y=60(75) 60x-44y=-35233x-y=1452答案：x=44y=68(76) 79x-45y=51014x-y=840答案：x=60y=94(77) 29x-35y=-21859x-y=4897答案：x=83y=75(78) 33x-24y=190530x+y=2670答案：x=89y=43(79) 61x+94y=1180093x+y=5952答案：x=64y=84(80) 61x+90y=500148x+y=

13、2448.答案：x=51y=21(81) 93x-19y=286x-y=1548答案：x=18y=88(82)19x-96y=-591030x-y=2340答案：x=78y=77(83) 80x+74y=808896x-y=8640答案：x=90y=12(84) 53x-94y=194645x+y=2610答案：x=58y=12(85) 93x+12y=911728x-y=2492答案：x=89y=70(86) 66x-71y=-167399x-y=7821答案：x=79y=97(87) 43x-52y=-174276x+y=1976答案：x=26y=55(88) 70x+35y=829540

14、x+y=2920答案：x=73y=91.(89) 43x+82y=475711x+y=231答案：x=21y=47(90) 12x-19y=23695x-y=7885答案：x=83y=40(91) 51x+99y=803171x-y=2911答案：x=41y=60(92) 37x+74y=440369x-y=6003答案：x=87y=16(93) 46x+34y=482071x-y=5183答案：x=73y=43(94) 47x+98y=586155x-y=4565答案：x=83y=20(95) 30x-17y=23928x+y=1064答案：x=38y=53(96)55x-12y=411279x-y=7268答案：x=92y=79(97)27x-24y=-450.67x-y=3886答案：x=58y=84(98) 97x+23y=811914x+y=966答案：x=69y=62(99) 84x+53y=1127570x+y=6790答案：x=97y=59(100) 51x-97y=29719x-y=1520答案：x=80y=39单纯的课本内容，并不能满足学生的需要，通过补充，达到内容的完善教育之通病是教用脑的人不用手，不教用手的人用脑，所以一无所能。教育革命的对策是手脑联盟，结果是手与脑的力量都可以大到不可思议。.