举例说明代数式25a+12b的意义 . 查看更多

 

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举例说明下列各代数式的意义:

(1):____________________________________;

(2)(1-20%)x:________________________________;

(3)2x-5y:___________________________________;

(4):__________________________________;

(5)27t+3:___________________________________;

(6)25a+12b:_________________________________;

(7):_______________________________;

(8):__________________________________.

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