We are going to take a trip ______ next weekend.
对于任意数a,定义运算“※”，a※b= a×b－a－b，12※4的值是（）
人气：262 ℃ 时间：2019-08-18 22:17:21
解答
We are going to take a trip at next weekend
12※4=12*4-12-4=32
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