There are mistakes in the " " parts. Make necessary corrections.
Solve x - 3 ≦ 2x + 4
x - 2x ≦ 4 + 3
-x ≦ 7
" x ≦ -7"
收錄日期: 2021-04-13 13:19:26
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https://hk.answers.yahoo.com/question/index?qid=20070905000051KK02104