1除(1+1/8) 2/3乘1/12 5/7乘5/9+4/9除7/5 2/5乘6/11+2/5乘5/11
=1乘8/9 =1/18 = 5/7(5/9+4/9) =2/5(6/11+5/11)
=8/9 =5/7 =2/5
你是几年级的呀.这些自己做做飞快的.
1除(1+1/8) 2/3乘1/12 5/7乘5/9+4/9除7/5 2/5乘6/11+2/5乘5/11
=1乘8/9 =1/18 = 5/7(5/9+4/9) =2/5(6/11+5/11)
=8/9 =5/7 =2/5
你是几年级的呀.这些自己做做飞快的.