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