题目

解不等式组并在数轴上表示解集．                                      答案：解：解不等式2x＜5，得：x＜，                                                          解不等式3（x+2）≥x+4，得：x≥﹣1，                                                     ∴不等式组的解集为：﹣1≤x＜，                                                           将不等式解集表示在数轴上如图：                                                                                                                      【点评】本题考查的是解一元一次不等式组，正确求出每一个不等式解集是基础，熟知“同大取大；同小取小；大小小大中间找；大大小小找不到”的原则是解答此题的关键．     

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