（悬赏30分）七年级下册解二元一次方程组100道，解不等式100道，解不等式组70道
1X-15≥2(X-14)-10
7X-1≤1(X-8)-8
2. 4X-19≥6(X-16)-1
1X+18≥3(X+4)+3
3. 6X-16<1(X-12)-6
5X+2≥6(X+7)+4
4. 2X-20≥4(X-15)-7
6X+19<1(X+3)+9
5. 3X+17>6(X+11)+2
1X-8≤1(X-4)-7
6. 7X-14>7(X-18)-5
4X+12≤5(X+6)+8
7. 1X+10≤2(X+14)+10
5X-9≥7(X-2)-3
8. 4X-15≤6(X-16)-1
2X+6≥1(X+9)+6
9. 6X+4<5(X+17)+9
3X-2<3(X-5)-1
10. 1X+13≤5(X+20)+5
7X+19>4(X+14)+3
11. 5X-10≥6(X-7)-8
2X+8≥4(X+15)+1
12. 6X-6<1(X-3)-3
6X-5<5(X-3)-4
13. 3X-4<2(X-11)-7
7X+2>7(X+19)+9
14. 5X-13≤2(X-12)-5
2X+11≥7(X+20)+7
15. 1X+10≤3(X+19)+9
6X-20<6(X-12)-4
16. 3X-19>3(X-20)-7
7X+17>1(X+8)+9
17. 5X-8≥3(X-2)-5
4X-6≤7(X-1)-6
18. 2X+5≥4(X+9)+8
6X+15<7(X+20)+6
19. 3X-13<4(X-8)-9
3X-12<1(X-8)-10
20. 7X+10>6(X+16)+2
5X-1≤1(X-9)-8
21. 2X+12<3(X+2)+3
6X-10<1(X-10)-6
22. 6X-9<4(X-9)-7
3X-7<2(X-17)-9
23. 1X+18≤4(X+11)+5
5X-16≥2(X-19)-7
24. 4X-15≤5(X-18)-9
2X+6<1(X+11)+4
25. 6X-4<5(X-19)-7
4X+15≤7(X+14)+10
26. 1X-6<3(X-7)-5
1X-12≤2(X-1)-3
27. 5X+3<4(X+14)+9
2X-1>1(X-2)-1
28. 7X+12≤4(X+15)+7
6X+11≤7(X+15)+8
29. 4X-1≥3(X-8)-3
1X-19<7(X-16)-6
30. 6X-10>3(X-9)-1
4X+1≥5(X+2)+7
31. 3X-20≤2(X-20)-1
7X+18≤6(X+8)+3
32. 5X-9<2(X-1)-8
2X+19>4(X+14)+4
33. 7X-10≥6(X-7)-9
6X-16>5(X-1)-8
34. 4X+7≥7(X+14)+3
1X-18<3(X-8)-9
35. 6X+9≤5(X+1)+4
5X+7>2(X+20)+5
36. 3X-18≥4(X-15)-8
7X+17<1(X+3)+1
37. 5X-7>4(X-16)-6
2X+18≥6(X+9)+2
38. 2X+17≤3(X+8)+3
7X-8<5(X-1)-9
39. 4X+18>7(X+14)+4
1X-17≤5(X-2)-6
40. 1X-8≤6(X-7)-1
6X+6≥4(X+15)+3
41. 3X-17<6(X-6)-1
1X+8>2(X+20)+6
42. 5X-18≥4(X-13)-2
5X-17≤1(X-12)-3
43. 3X+8<3(X+5)+9
7X-19>5(X-18)-4
44. 5X+9≥1(X+11)+10
4X+8≤4(X+11)+1
45. 2X-18<1(X-13)-3
7X+8>3(X+6)+8
46. 4X-19≥5(X-19)-4
2X+10<1(X+12)+9
47. 1X+9<4(X+11)+10
6X-19>7(X-5)-6
48. 4X+10≥2(X+18)+1
1X-1<4(X-11)-7
49. 6X+11>7(X+2)+5
5X+10>4(X+2)+6
50. 3X-1≤6(X-15)-1
1X+12≥1(X+8)+7
51. 6X-15≤1(X-6)-5
5X-1<7(X-20)-4
52. 3X+5≥7(X+19)+2
7X+16>2(X+13)+5
53. 5X-6≤5(X-6)-1
3X+17<7(X+19)+6
54. 2X+16≥4(X+19)+7
7X-7>6(X-12)-3
55. 5X+10≥6(X+10)+1
2X-8≥4(X-18)-4
56. 2X-19≥5(X-1)-10
7X+10>1(X+14)+6
57. 4X-1≤3(X-7)-1
2X+11<5(X+20)+7
58. 7X+15≤5(X+18)+5
6X+1>4(X+13)+3
59. 4X-4≥4(X-11)-2
2X+15>7(X+6)+5
60. 7X+18≥7(X+4)+3
6X+5≤5(X+18)+2
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+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
29.6x+8y=68
7x+6y=66
30.2x+2y=22
7x+2y=47
31. x-y=3
3x-8y=4
x=y+3
32. 3x+2y=7
5x-2y=1
33. x=3-5t
3y-2t=x
(33) 40x+31y=6043
45x-y=3555
(34) 47x+50y=8598
45x+y=3780
(35) 45x-30y=-1455
29x-y=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) 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
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