三.解下列不等式,并在数轴上表示出它们的解集
(1)8223xx2
xx4923(3)
)1(5)32(2xx(4)
0)7(319x(5)31222xx(6)223125xx(7)7)1(68)2(5xx(8))2(3)]2(2[3xxxx(9)1215312xx(10)215329323xxx(11)11(1)223xx(12))1(52)]1(21[21xxx(13)41328)1(3xx(14)2503
0xxx三、解不等式组,并在数轴上表示它的解集1
04,012xx2
074,03xx4
3342,121xxxx5
-5<6-2x<3.6
322,352xxxx7
6)2(3)3(2,132xxxx8)
2(28,142xxx9
234512xxx10
532(1)314(2)2xxx11
052,1372xxx12
43)1(4,1321xxxx13
14321x解下列方程:(1)85)1(21)2(3yxxy(2)184332yxyx(3)023256017154yxyx(4)234321332yxyx(5)1323241yxxy(6)24121232432321yxyx(7)04235132423512yxyx(8)57326231732623yxyxyxyx(9)233418xyxy(10)563640xyxy(7)2
0523151yxyx(8)57326231732623yxyxyxyx(9)04235132423512yxyx(10)1323241yxxy(11)2132132yxyx(12)234321332yxyx