题目内容
(1)计算
-
-
+(
-1)0
(2)解不等式组
.
| 18 |
| 2 | ||
|
| ||
| 2 |
| 5 |
(2)解不等式组
|
(1)原式=3
-
-
+1
=3
-
-
+1
=
+1;
(2)
由①得x+1>3-x,即x>1;
由②得4x+16<3x+18,即x<2;
不等式组的解集为1<x<2.
| 2 |
2
| ||
| 2 |
| 2 |
=3
| 2 |
| 2 |
| 2 |
=
| 2 |
(2)
|
由①得x+1>3-x,即x>1;
由②得4x+16<3x+18,即x<2;
不等式组的解集为1<x<2.
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