问题
填空题
当x______时,代数式3x+2的值不小于5.
答案
∵代数式3x+2的值不小于5,
∴3x+2≥5,
移项合并,得3x≥3,
系数化为1,得x≥1.
当x______时,代数式3x+2的值不小于5.
∵代数式3x+2的值不小于5,
∴3x+2≥5,
移项合并,得3x≥3,
系数化为1,得x≥1.
阅读下面的对话,根据上下文从方框内的选项中选择恰当的选项补全对话,使句义完整,符合逻辑。有两项为多余选项。 Paru: 1 , Nick? Is it time to go home? Nick: No, it’s 3:15 p.m.. It’s time to go and play games. 2 ?
Mr. Li: Whose is this watch? Is it your, Nick? Nick: 3 . Mr. Li: What color is your watch, Paul? Paul: 4 . Mr. Li: Is this one yours? Paul: Oh, yes, it’s mine. Mr. Li: Paul, 5 . Put it in your schoolbag. Paul: Thank you, Mr. Li. |