2. 职称英语
  3. Solve ｜6x + 8｜ = ｜3x - 7｜ for x.-5, -1/9To find the possible answers for x in th

Solve ｜6x + 8｜ = ｜3x - 7｜ for x.-5, -1/9To find the possible answers for x in th

游客2024-01-12  31
问题 Solve ｜6x + 8｜ = ｜3x - 7｜ for x.
选项
答案 -5, -1/9
解析 To find the possible answers for x in this problem, set up two equations:
6x + 8 = 3x - 7, and 6x + 8 = -(3x - 7).
First, distribute the minus sign in the second equation, giving you 6x + 8 = -3x + 7. Then solve both for x:
3x= -15,and 9x = -1
x = -5, and x = -
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