13/11-4/1-3/4加十一分之七用简便方法计算
13/11-4/1-3/4+11åä¹7ï¼è¥ç¨ç®ä¾¿è®¡ç®ï¼åé¢ç®æ°æ®åºè¯¥æ误ï¼4/1åºä¸º1/4
13/11-1/4-3/4+11åä¹7
=ï¼13/11+11åä¹7ï¼-ï¼1/4+3/4ï¼
=20/11-1
=9/11
ç»ææ¯9/11ï¼ä¹å°±æ¯11åä¹9
13/11-1/4-3/4+11åä¹7
=ï¼13/11+11åä¹7ï¼-ï¼1/4+3/4ï¼
=20/11-1
=9/11
ç»ææ¯9/11ï¼ä¹å°±æ¯11åä¹9
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