(1){2x+1>-1,2x+1<3(2){-(x+1)>3,2x+9>3(3){3(x-1)+1>5x-2(1-x),5-(2x-1)<-6x(4){-3(x-2)≥4-x,1+2x/1>x-1是 第二题{后面的-是负号
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(1){2x+1>-1,2x+1<3(2){-(x+1)>3,2x+9>3(3){3(x-1)+1>5x-2(1-x),5-(2x-1)<-6x(4){-3(x-2)≥4-x,1+2x/1>x-1是第
(1){2x+1>-1,2x+1<3(2){-(x+1)>3,2x+9>3(3){3(x-1)+1>5x-2(1-x),5-(2x-1)<-6x(4){-3(x-2)≥4-x,1+2x/1>x-1是 第二题{后面的-是负号
(1){2x+1>-1,2x+1<3
(2){-(x+1)>3,2x+9>3
(3){3(x-1)+1>5x-2(1-x),5-(2x-1)<-6x
(4){-3(x-2)≥4-x,1+2x/1>x-1
是 第二题{后面的-是负号
(1){2x+1>-1,2x+1<3(2){-(x+1)>3,2x+9>3(3){3(x-1)+1>5x-2(1-x),5-(2x-1)<-6x(4){-3(x-2)≥4-x,1+2x/1>x-1是 第二题{后面的-是负号
(1)2x>-2 2x>2
x>-1 x>1
所以x>1
(2)-x-1>3 2x>-6
-x>4 x>-3
x
-1<x<1
x>2
x>-0.5
-2
(1)-1
不好好学习!!!
http://wenku.baidu.com/view/6374240cba1aa8114431d9a4.html
去看看。应该可以帮助你
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