2. 职称英语
  3. For which values of x is 2x-5＜-3x+20? The first step in solving this problem is

For which values of x is 2x-5＜-3x+20? The first step in solving this problem is

游客2024-01-12  8
问题 For which values of x is 2x-5＜-3x+20?
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答案  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＞.
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