2. 外语
  3. For which values of x is 2x - 5 < -3x + 20?

For which values of x is 2x - 5 < -3x + 20?

admin2013-02-19  22
问题 For which values of x is 2x - 5 < -3x + 20?
选项
答案5 >x
解析 The first step in solving this problem is to isolate the variable on one side of the inequality:
-5 - 20 < -3x- 2x
-25 < -5x
5 >x
It is important to remember that when dealing with inequalities, multiplying or dividing by a negative number involves reversing the sign. In this case, both sides were divided by -5, so the sign changes from < to >.
转载请注明原文地址:https://kaotiyun.com/show/UVkO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)