【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《一元一次不等式及方程组专题练习题》,欢迎阅读!
三. 解下列不等式,并在数轴上表示出它们的解集.
(1) 3x22x8 2. 32x94x
(3). 2(2x3)5(x1) (4). 193(x7)0
2x2x1x53x2
(6) 1
2322
(7) 5(x2)86(x1)7 (8)3[x2(x2)]x3(x2)
2x15x13x292x5x1(9) 1 (10)
32332
(5)
11(x1)2x (12) 1[x1(x1)]2(x1) (11)23225
(13)
3(x1)x10.4x0.90.030.02.xx5
(14) 23
0.50.03284
三、解不等式组,并在数轴上表示它的解集 1.
2x10,
4x0.
2.
3x0,
4x70.
1
x1x,42 2x43x3.
2x53x,
6.x2x
32
x
41,82 x82(x2).
5.-5<6-2x<3.
xx
1,7.23 2(x3)3(x2)6.
9.2x1x54
3x. 2
5x32x
10.3x1
4
22x73x1,
11.x2
0.(2)5
(1)
12x
x1,23x
12.3 13.11
44(x1)3x4.解下列方程:
3(y2)x1
(1)
2(x1)5y8
xy
(2)23
3x4y18
4x15y170(3)
6x25y230
xy13232
(4)
xy3342
y1x221x23y243(5)4 (6) 3
2x3y1
2x13y2(7)542 3x153y2
40(9)
x2y
3 3x4y18
12(7)1xy
535 0.5x0.3y0.2 (9)2x13y2
542 3x153y240
xy
11)
231( 1
2x3y
223x21y2413x2y2x3y
(8)3x62y2x713
6
y75
10)x5y63x6y40
3x2y2x3)y3x62y2x71(86
3y
75y1x(10)
2
43y3
2x1
(12)xy13
2x32
3y432
(
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