如题所述
解ï¼4/15ï¼7/15
åæ¯ç¸åï¼åå大çåèå°
7/15ï¼7/16
ååç¸åï¼åæ¯å¤§çåèå°
4/15å7/16å¯éè¿éåæ¥æ¯è¾å¤§å°
4/15=64/240
7/16=105/240
å¯å¾ï¼4/15ï¼7/16
综ä¸ï¼4/15ï¼7/16ï¼7/15
åæ¯ç¸åï¼åå大çåèå°
7/15ï¼7/16
ååç¸åï¼åæ¯å¤§çåèå°
4/15å7/16å¯éè¿éåæ¥æ¯è¾å¤§å°
4/15=64/240
7/16=105/240
å¯å¾ï¼4/15ï¼7/16
综ä¸ï¼4/15ï¼7/16ï¼7/15
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