二元一次方程30道过程和答案,20道二元一次方程组和过程

1.2x y=3 4x-3y=5 2.x y=2 2x 3y=5 3.5x 45-y=1 x-y=-45 4.y x 1=32 x-y=10 5.4(2x-y)=5 4x-y=3 6.0.5x 0.5y=1 1.5x-y=1 7.56x 23y=64 14x-21y=10 8.5x 5y=10 x-y=0 9.32.1x-7y=8 71.3y-65x=90 10.x y-45=91 5x-3y=23 1) 66x 17y=3967 25x y=1200 答案:x=48 y=47 (2) 18x 23y=2303 74x-y=1998 答案:x=27 y=79 (3) 44x 90y=7796 44x y=3476 答案:x=79 y=48 (4) 76x-66y=4082 30x-y=2940 答案:x=98 y=51 (5) 67x 54y=8546 71x-y=5680 答案:x=80 y=59 (6) 42x-95y=-1410 21x-y=1575 答案:x=75 y=48 (7) 47x-40y=853 34x-y=2006 答案:x=59 y=48 (8) 19x-32y=-1786 75x y=4950 答案:x=66 y=95 (9) 97x 24y=7202 58x-y=2900 答案:x=50 y=98 (10) 42x 85y=6362 63x-y=1638 答案:x=26 y=62 (11) 85x-92y=-2518 27x-y=486 答案:x=18 y=44 (12) 79x 40y=2419 56x-y=1176 答案:x=21 y=19 (13) 80x-87y=2156 22x-y=880 答案:x=40 y=12 (14) 32x 62y=5134 57x y=2850 答案:x=50 y=57 (15) 83x-49y=82 59x y=2183 答案:x=37 y=61 (16) 91x 70y=5845 95x-y=4275 答案:x=45 y=25 (17) 29x 44y=5281 88x-y=3608 答案:x=41 y=93 (18) 25x-95y=-4355 40x-y=2000 答案:x=50 y=59 (19) 54x 68y=3284 78x y=1404 答案:x=18 y=34 (20) 70x 13y=3520 52x y=2132 答案:x=41 y=50 (21) 48x-54y=-3186 24x y=1080 答案:x=45 y=99 (22) 36x 77y=7619 47x-y=799 答案:x=17 y=91 (23) 13x-42y=-2717 31x-y=1333 答案:x=43 y=78 (24) 28x 28y=3332 52x-y=4628 答案:x=89 y=30 (25) 62x-98y=-2564 46x-y=2024 答案:x=44 y=54 (26) 79x-76y=-4388 26x-y=832 答案:x=32 y=91 (27) 63x-40y=-821 42x-y=546 答案:x=13 y=41 (28) 69x-96y=-1209 42x y=3822 答案:x=91 y=78 (29) 85x 67y=7338 11x y=308 答案:x=28 y=74 (30) 78x 74y=12928 14x y=1218 答案:x=87 y=83 (31) 39x 42y=5331 59x-y=5841 答案:x=99 y=35 (32) 29x 18y=1916 58x y=2320 答案:x=40 y=42 (33) 40x 31y=6043 45x-y=3555 答案:x=79 y=93 (34) 47x 50y=8598 45x y=3780 答案:x=84 y=93 (35) 45x-30y=-1455 29x-y=725 答案:x=25 y=86 (36) 11x-43y=-1361 47x y=799 答案:x=17 y=36 (37) 33x 59y=3254 94x y=1034 答案:x=11 y=49 (38) 89x-74y=-2735 68x y=1020 答案:x=15 y=55 (39) 94x 71y=7517 78x y=3822 答案:x=49 y=41 (40) 28x-62y=-4934 46x y=552 答案:x=12 y=85 (41) 75x 43y=8472 17x-y=1394 答案:x=82 y=54 (42) 41x-38y=-1180 29x y=1450 答案:x=50 y=85 (43) 22x-59y=824 63x y=4725 答案:x=75 y=14 (44) 95x-56y=-401 90x y=1530 答案:x=17 y=36 (45) 93x-52y=-852 29x y=464 答案:x=16 y=45 (46) 93x 12y=8823 54x y=4914 答案:x=91 y=30 (47) 21x-63y=84 20x y=1880 答案:x=94 y=30 (48) 48x 93y=9756 38x-y=950 答案:x=25 y=92 (49) 99x-67y=4011 75x-y=5475 答案:x=73 y=48 (50) 83x 64y=9291 90x-y=3690 答案:x=41 y=92