如题所述
8åå»3åä¹ä¸é¤9åä¹4çåï¼æå¾çå·®åä¹1.8ï¼ç§¯æ¯å¤å°
åå¼ä¸º
(8-1/3÷4/9)Ã1.8
=ï¼8-3/4)Ã1.8
=29/4Ã9/5
=261/20
åå¼ä¸º
(8-1/3÷4/9)Ã1.8
=ï¼8-3/4)Ã1.8
=29/4Ã9/5
=261/20
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