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=2 x-2y=649. 5x+3y=2 2x-y=350. 9x-3y=12 2x+y=651. 2x+3y=7 3x+2y=352. 3x+2y=18 x+y=753. 2x-5y=1x+y=354. x+8y=442 5x+6y=48055. 3x-2y=5 7x-4y=1156. 3x-5y=2 2x-y=357. 4x-3y=18 2x-y=858. x-2y=5x+3y=-559. 3x+y=7 2x+3y=760. 3x-2y=7 2x-3y=3
