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数学
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甲数是a,比乙数的3倍少b,表示乙数的式子是( )
A. 3a-b
B. a÷3-b
C. ( a+b )÷3
D. ( a-b )÷3
人气:386 ℃ 时间:2019-10-23 04:49:33
解答
(a+b)÷3;
故选:C.
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