新课标数学七年级下册中出现了两边夹不等式,由于课本无范例.本文列举二例,谈谈如何解这类不等式.例1解不等式-2≤3x-1/2<4.分析实际是两个一元一次不等式-2≤3x-1/2和3x-1/2<4连写在一起,也可称做两边夹不等式,它实质是不等式组,可转化为不等式组求解. There are two clip inequalities in the second grade of mathematics in the new curriculum standard. There are no examples in the textbook. This article lists two cases and talks about how to solve such inequalities. Example 1 Solution Inequality -2≤3x-1/2<4. Two unary inequalities -2≤3x-1/2 and 3x-1/2<4 are written together. They can also be called two-sided clamp inequalities. They are essentially inequalities and can be transformed into inequalities.