Question

七上数学方程计算题四十道，急用 跪求快点，急！

计算题，七年上，不要应用题

Answer 1

(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

追问

兄弟呀，四十道，怎么只有二十道呢？

还是要谢谢你的，采纳啦

追答

(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

字数限制。。。一下发不了那么多

追问

七上啊，一元一次方程，为什么是二元一次的呢

追答

1.2(x-2)-3(4x-1)=9(1-x) 
2.11x+64-2x=100-9x 
3.15-(8-5x)=7x+(4-3x) 
4.3(x-7)-2[9-4(2-x)]=22 
5.3/2[2/3(1/4x-1)-2]-x=2 
6.2(x-2)+2=x+1 
7.0.4(x-0.2)+1.5=0.7x-0.38 
8.30x-10(10-x)=100 
9.4(x+2)=5(x-2) 
10.120-4(x+5)=25 
11.15x+863-65x=54 
12.12.3(x-2)+1=x-(2x-1) 
13.11x+64-2x=100-9x 
14.14.59+x-25.31=0 
15.x-48.32+78.51=80 
16.820-16x=45.5×8 
17.(x-6)×7=2x 
18.3x+x=18 
19.0.8+3.2=7.2 
20.12.5-3x=6.5 
21.1.2(x-0.64)=0.54 
22.x+12.5=3.5x 
23.8x-22.8=1.2 
24.1\ 50x+10=60 
25.2\ 60x-30=20 

Answer 2

例如以下40道题目:
1.x/3 -5 = (5-x)/2
2.2(x+1) /3=5(x+1) /6 -1
3.(1/5)x +1 =(2x+1)/4
4.5(3x+4)=1/4(2x+2）
5. 3/2[2/3(1/4x-1)-2]-x=2
6. 2(x-2)+2=x+1
7. 0.4(x-0.2)+1.5=0.7x-0.38
8. 30x-10(10-x)=100
9. 4(x+2)=5(x-2)
10. 120-4(x+5)=25
11. 15x+863-65x=54
12. 12.3(x-2)+1=x-(2x-1)
13. 11x+64-2x=100-9x
14. 14.59+x-25.31=0
15. x-48.32+78.51=80
16. 820-16x=45.5×8
17. (x-6)×7=2x
18. 3x+x=18
19. 0.8+3.2=7.2
20. 12.5-3x=6.5
21. 1.2(x-0.64)=0.54
22. x+12.5=3.5x
23. 8x-22.8=1.2
24. 50x+10=60
25. 60x-30=20
26. 20x+50=110
27. 2x=5x-3
28. 90=10+x
29. 90+20x=30
30. 91+3x=700
31.2 x+5=8
32.3x＋5(138－x) = 540
33.x-5=3
34.2x-10.3x=15
35.0.52x-(1-0.52)x=80
36.x/2+3x/2=7
37.3x+7=32-2x
38.3x+5(138-x)=540
39.3x-7(x-1)=3-2(x+3)
40.18x+3x-3=18-2(2x-1)

Answer 3

3x÷6x=2
2x+3x=15 15x=3x-7x
y÷3=6 5x+3y=5
6x=15/2+3 3x=3x+1-1
5x+3=5
6x+6=x