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题目内容 (请给出正确答案)
单选题
If b = 4 and c = 7, what is the value of 3b- 5c?
A

-27

B

-23

C

3

D

6

E

20


参考答案

参考解析
解析:
根据题干b=4,c=7,可知3b-5c= 3(4)-5(7) = 12-35 =-23
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