题目内容
解下列不等式,并把解集在数轴上表示出来.
(1)-3x>2
(2)
x>-
x-2
(3)3(x+1)<4(x-2)-3
(4)
-
≤1.
(1)-3x>2
(2)
1 |
3 |
2 |
3 |
(3)3(x+1)<4(x-2)-3
(4)
2x-1 |
3 |
5x+1 |
2 |
(1)-3x>2,
解得:x<-
;

(2)去分母得:x>-2x-6,
解得:x>-2;

(3)去括号得:3x+3<4x-8-3,
解得:x>14;

(4)去分母得:2(2x-1)-3(5x+1)≤6,
去括号得:4x-2-15x-3≤6,
解得:x≥-1.

解得:x<-
2 |
3 |

(2)去分母得:x>-2x-6,
解得:x>-2;

(3)去括号得:3x+3<4x-8-3,
解得:x>14;

(4)去分母得:2(2x-1)-3(5x+1)≤6,
去括号得:4x-2-15x-3≤6,
解得:x≥-1.


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