七年级上册数学二元一次方程计算题

2个回答

  • 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