单选题If b = 4 and c = 7, what is the value of 3b- 5c?A-27B-23C3D6E20

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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