Let a,b,c,and d be real number with |a-b|=2 b-c=3 c-d=4 .
What is the sum of all possible values ofa-d? 答案为一个数
答案为18 我也不明白 a减d
人气：249 ℃ 时间：2020-05-04 01:43:15
解答
|a-b|=2 b-c=3 c-d=4 .是这条题目关于a、b、c、d的关系,题目是要你求出a、b、c、d的和.
a=7 b=9 c=6 d=2 a+b+c+d=24 不信你可以验证一下.
那个不是a减d的意思,是要你求出a~d的可能值的和.
"possible"暗示了此题有好几个答案.
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