化简67×66分之65,12分之5÷9+12分之5÷8分之9
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发布时间:2024-10-07 22:03
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热心网友
时间:2024-12-13 04:47
=(66+1)*(65/66)
=65+(65/66)
=65又65分之66
=(5/12)*(1/9)+(5/12)*(8/9)
=(5/12)*1
=5/12
热心网友
时间:2024-12-13 04:47
67×66分之65
=(66+1)*65/66
=66*65/66+65/66
=65+65/66
=65又65/66
12分之5÷9+12分之5÷8分之9
=5/12*1/9+5/12*8/9)
=5/12*(1/9+8/9)
=5/12*1
=5/12
热心网友
时间:2024-12-13 04:48
67×65/66=(66+1)(66-1)/66=(66²-1)/66=66-1/66=65又65/66
5/12÷9+5/12÷9/8=5/12(1/9+1÷9/8)=5/12(1/9+8/9)=5/12×1=5/12