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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=471) 66x+17y=396725x+y=1200(2) 18x+23y=230374x-y=1998(3) 44x+90y=779644x+y=3476(4) 76x-66y=408230x-y=2940(5) 67x+54y=854671x-y=5680(6) 42x-95y=-141021x-y=1575(7) 47x-40y=85334x-y=2006(8) 19x-32y=-178675x+y=4950(9) 97x+24y=720258x-y=2900(10) 42x+85y=636263x-y=1638
4、(11) 85x-92y=-251827x-y=486(12) 79x+40y=241956x-y=1176(13) 80x-87y=215622x-y=880(14) 32x+62y=513457x+y=2850 (15) 83x-49y=8259x+y=2183(16) 91x+70y=584595x-y=4275(17) 29x+44y=528188x-y=3608 (18) 25x-95y=-435540x-y=2000(19) 54x+68y=328478x+y=1404 (20) 70x+13y=352052x+y=2132(21) 48x-54y=-318624x+y=1080(
5、22) 36x+77y=761947x-y=799(23) 13x-42y=-271731x-y=1333(24) 28x+28y=333252x-y=4628(25) 62x-98y=-256446x-y=20241)答案：x=48 y=47(2)答案：x=27 y=79(3)答案：x=79 y=48(4)答案：x=98 y=51(5)答案：x=80 y=59(6)答案：x=75 y=48(7)答案：x=59 y=48(8)答案：x=66 y=95(9)答案：x=50 y=98(10)答案：x=26 y=62(11)答案：x=18 y=44(12)答案：x=21 y=19(13)答案：x=4
6、0 y=12(14)答案：x=50 y=57(15)答案：x=37 y=61(16)答案：x=45 y=25(17)答案：x=41 y=93(18)答案：x=50 y=59(19)答案：x=18 y=34(20)答案：x=41 y=50(21)答案：x=45 y=99(22)答案：x=17 y=91(23)答案：x=43 y=78(24)答案：x=89 y=30(25)答案：x=44 y=54(1) 66x+17y=3967 25x+y=1200 (2) 18x+23y=2303 74x-y=1998 (3) 44x+90y=7796 44x+y=3476 (4) 76x-66y=4082 3
7、0x-y=2940 (5) 67x+54y=8546 71x-y=5680 (6) 42x-95y=-1410 21x-y=1575 (7) 47x-40y=853 34x-y=2006 (8) 19x-32y=-1786 75x+y=4950 (9) 97x+24y=7202 58x-y=2900 (10) 42x+85y=6362 63x-y=1638 (11) 85x-92y=-2518 27x-y=486 (12) 79x+40y=2419 56x-y=1176 (13) 80x-87y=2156 22x-y=880 (14) 32x+62y=5134 57x+y=2850 (15)
8、83x-49y=82 59x+y=2183 (16) 91x+70y=5845 95x-y=4275 (17) 29x+44y=5281 88x-y=3608 (18) 25x-95y=-4355 40x-y=2000 (19) 54x+68y=3284 78x+y=1404 (20) 70x+13y=3520 52x+y=2132 (21) 48x-54y=-3186 24x+y=1080 (22) 36x+77y=7619 47x-y=799 (23) 13x-42y=-2717 31x-y=1333 (24) 28x+28y=3332 52x-y=4628 (25) 62x-98y=-2
9、564 46x-y=2024 (26) 79x-76y=-4388 26x-y=832 (27) 63x-40y=-821 42x-y=546 (28) 69x-96y=-1209 42x+y=3822 (29) 85x+67y=7338 11x+y=308 (30) 78x+74y=12928 14x+y=1218 (31) 39x+42y=5331 59x-y=5841 (32) 29x+18y=1916 58x+y=2320 (33) 40x+31y=6043 45x-y=3555 (34) 47x+50y=8598 45x+y=3780 (35) 45x-30y=-1455 29x-y
10、=725 (36) 11x-43y=-1361 47x+y=799 (37) 33x+59y=3254 94x+y=1034 (38) 89x-74y=-2735 68x+y=1020 (39) 94x+71y=7517 78x+y=3822 (40) 28x-62y=-4934 46x+y=552 (41) 75x+43y=8472 17x-y=1394 (42) 41x-38y=-1180 29x+y=1450 (43) 22x-59y=824 63x+y=4725 (44) 95x-56y=-401 90x+y=1530 (45) 93x-52y=-852 29x+y=464 (46)
11、93x+12y=8823 54x+y=4914 (47) 21x-63y=84 20x+y=1880 (48) 48x+93y=9756 38x-y=950 (49) 99x-67y=4011 75x-y=5475 (50) 83x+64y=9291 90x-y=3690 (1) 答案：x=48 y=47 (2)答案：x=27 y=79 (3)答案：x=79 y=48 (4)答案：x=98 y=51 (5)答案：x=80 y=59 (6)答案：x=75 y=48 (7)答案：x=59 y=48 (8)答案：x=66 y=95 (9)答案：x=50 y=98 (10)答案：x=26 y=62 (
12、11)答案：x=18 y=44 (12)答案：x=21 y=19 (13)答案：x=40 y=12 (14)答案：x=50 y=57 (15)答案：x=37 y=61 (16)答案：x=45 y=25 (17)答案：x=41 y=93 (18)答案：x=50 y=59 (19)答案：x=18 y=34 (20)答案：x=41 y=50 (21)答案：x=45 y=99 (22)答案：x=17 y=91 (23)答案：x=43 y=78 (24)答案：x=89 y=30 (25)答案：x=44 y=54 (26)答案：x=32 y=91 (27)答案：x=13 y=41 (28)答案：x=91
13、y=78 (29)答案：x=28 y=74 (30)答案：x=87 y=83 (31)答案：x=99 y=35 (32)答案：x=40 y=42 (33)答案：x=79 y=93 (34)答案：x=84 y=93 (35)答案：x=25 y=86 (36)答案：x=17 y=36 (37)答案：x=11 y=49 (38)答案：x=15 y=55 (39)答案：x=49 y=41 (40)答案：x=12 y=85 (41)答案：x=82 y=54 (42)答案：x=50 y=85 (43)答案：x=75 y=14 (44)答案：x=17 y=36 (45)答案：x=16 y=45 (46)答案：x=91 y=30 (47)答案：x=94 y=30 (48)答案：x=25 y=92 (49)答案：x=73 y=48 (50)答案：x=41 y=92
