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一元一次不等式(组)计算题专项练习(50道)
一、解下列不等式.
1. 3x22x8 2. 32x94x
3. 2x-19<7x+31. 4.-2x+1>0; x512x,2x1x,3. 4
3x24x.x24x1.
3(x1)5x4 ①
3x15(x1)
5.x12x1 6 465x
5.x+8≥4x-1;
7. 193(x7)0
9 10-4(x-3)≤2(x-1)
11.2(x-4)-3<1-3(x-2)
13. 2x22x13
二 、解下列关于x的不等式组
1. 12x3x , 2
5x4x1 6. 2(2x3)5(x1) 8. 3(2x+5)<2(4x+3); 10. 3(y2)182(y1) 12. m3m12
1 14. x5213x2
2
3x14,2xx2. ≤
2
3
72
3x51x,31
x14x8.
2x53(x2)9
x1x 23
11.0≤
32x5≤1.
② 3x63 x3x2 8.
4,
12x 3x1. 1
10.3(x2)2x1x112x2
3.12.-1<3x1
2
≤4
三、 解下列不等式(组),并在数轴上表示出它们的解集.
12x3x3x14(14) (15)
(1)1(x1)12x (2) 1[x1(x1)]223225
(x1) (3) 3(x1)x18234
(4) 0.4x0.90.030.02.xx5
0.50.032
⑸.2x1x5432
x. (6)3(y2)182(y1) (7)mm1
321
5x3(1)(8) 2x22x1x52x
3 (9)213x2
2 (10)
3x12
4(2)
2x73x1,12x
(11)x1 (13)1
23x
1 x250. (12).
3
,4(x1)3x4.
4
5x4x1
2xx2
x512x2x30
2x3(16)3x24x(17)
3x20 (18) x182x
(19)2x53(x2)
x1x 32x(20)0≤
≤1
2
35
3x13(x2)45x(21)-1<2≤4 (22)
x1
2
x3x1
3(x1)5x4 3x12(x1)(23)x12
≤2x13 (24)
2(x1)4x
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