1、 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 15. 9x
2、+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.
3、 6x+8y=68 7x+6y=66 30. 2x+2y=22 7x+2y=4731. 5x+3y=83x+5y=8 32. 6x-7y=5x+2y=4 33. 10x-8y=14x+y=5 34. 4x+7y=3x+y=0 35. 3x+y=107x-y=20 36. 44x+10y=27x+y=1 37. 8x-y=0x+y=18 38. 11x-y=1211y-x=-12 39. 5x+6y=272x+3y=12 40. 7x-2y=4x+2y=12 41. (2x+y)-5y=22x-5y=0 42. 7x-3y=33x+2y=21 43. 7x+2y=21y-6x=1 44. 10x
4、-8y=03x-2y=2 45. 3x+y=105x-7y=846. 3x-2y=1 x-y=347. x+3y=-53x-4y=-248. y-3x=2x-2y=649. 5x+3y=22x-y=350. 9x-3y=122x+y=651. 2x+3y=73x+2y=352. 3x+2y=18x+y=753. 2x-5y=1x+y=354. x+8y=4425x+6y=48055. 3x-2y=57x-4y=1156. 3x-5y=22x-y=357. 4x-3y=182x-y=858. x-2y=5x+3y=-559. 3x+y=72x+3y=760. 3x-2y=72x-3y=361.
5、23x+17y=6317x+23y=57 62. x-y=2x+1=2(y-1) 63. x-5y=03x+2y=1764. x+2=42(y-3)=665. 3(y-2)=x-12(x-1)=5y-866. x+2y+2=0 7x-4y=-4167. x-3y+20=03x+7y-100=068. 2x+y=13x-2y=-969. 3x-4y+11=03y-4x+53=070. 4y=3x+45y=4x+371. 7x-3y+1=04x-5y=-1772. 3x-y-3=04x+3y=1773. x-y=32y+3(x-y)=1174. 143yx3x-4y=275. 34yx3(x-4)
6、=4(y+2)76. 132yx3x+2y=1077. yx2312(x+1)-y=1178. 023yx2(2x+y)-5=7y79. 6x+6y=486x+3y=4280. (2x+y)-5y=22x-5y=081. 123yx2x+y=2 82. 34yx3(x-4)=4(y+2)83. 2x-3y=-53x+2y=12 84. 3x-2(x+2y)=311x+4(x+2y)=4585. x-2y=3 10725yx86. 9x+2y=20 3x+4y=1087. 5231yx0.5x-0.3y=0.288. 11x-9y=12-4x+3y=-589. 3x+5y=66x+15y=1690. 3x-y-3=04x+3y=1791. x+y=5000.7+0.9y=38692. 84.05126.yx93. 14yxx+4y=494. 6239yx95. 3x+5y=198x-3y=6796. 5716xx2x-1=3y+397. x-2y=71-3x= 21y98. 5.3x+4.7y=1124.7+5.3y=8899. 315742yx100. x+y=93(x+y)+2x=33
