文档介绍：2x+9y=813x+y=349x+4y=358x+3y=307x+2y=527x+4y=624x+6y=549x+2y=872x+y=72x+5y=19x+2y=213x+5y=565x+7y=525x+2y=225x+5y=657x+7y=+4y=56x+4y=215x+7y=415x+8y=447x+5y=543x+4y=38x+8y=154x+y=293x+6y=249x+5y=469x+2y=624x+3y=369x+4y=467x+4y=429x+7y=1354x+y=413x+8y=51x+6y=279x+3y=994x+7y=959x+2y=383x+6y=185x+5y=457x+9y=698x+2y=287x+8y=62x+6y=143x+3y=277x+4y=672x+8y=265x+4y=527x+6y=747x+y=94x+6y=166x+6y=486x+3y=428x+2y=167x+y=114x+9y=778x+6y=946x+8y=687x+6y=662x+2y=227x+2y=47(1)66x+17y=396725x+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=720258x-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=528188x-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=761947x-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-98y=-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)40x+31y=604345x-y=3555答案:x=79y=93