(äºåä¸åä¹ä¸åä¸åäºåä¹ä¸å ååäºåä¹å)é¤ä»¥(è´ä¸åå
åä¹ä¸)
=(ä¸åä¹7-äºåä¹7+ååäºåä¹å)Ãï¼-6/7ï¼
=-7/3Ã6/7+7/2Ã6/7-4/45Ã6/7
=-2+3-8/105
=97/105
=(ä¸åä¹7-äºåä¹7+ååäºåä¹å)Ãï¼-6/7ï¼
=-7/3Ã6/7+7/2Ã6/7-4/45Ã6/7
=-2+3-8/105
=97/105
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第1个回答 2012-09-23
(二又三分之一减三又二分之一加四十五分之四)除以(负一又六分之一)
=(2+1/3-3-1/2+4/45)÷(-7/6)
=(-1-1/6+4/45)÷(-7/6)
=(-1-7/90)÷(-7/6)
=97/90×6/7
=97/105
即105分之97
=(2+1/3-3-1/2+4/45)÷(-7/6)
=(-1-1/6+4/45)÷(-7/6)
=(-1-7/90)÷(-7/6)
=97/90×6/7
=97/105
即105分之97
第2个回答 2012-09-23
(二又三分之一减三又二分之一加四十五分之四)除以(负一又六分之一)
=(7/3-7/2+4/45)÷(-7/6)
=(-7/6+4/45)÷(-7/6)
=1-4/45x6/7
=291/315
=97/105本回答被提问者采纳
=(7/3-7/2+4/45)÷(-7/6)
=(-7/6+4/45)÷(-7/6)
=1-4/45x6/7
=291/315
=97/105本回答被提问者采纳
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