单选题If b = 4 and c = 7, what is the value of 3b- 5c?A -27B -23C 3D 6E 20

题目
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

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