1/5*8÷4/5
=(8/5)×(5/4)
=2
3/5+1/2*4/5
=3/5+2/5
=1
5/6÷2/3÷5/6
=(5/6)×(3/2)×(6/5)
=3/2
1-7/9÷7/8
=1-(7/9)×(8/7)
=1-8/9
=1/9
1/5*8÷4/5
=8/5*5/4
=2
3/5+1/2*4/5
=3/5+2/5
=1
5/6÷2/3÷5/6
=5/6*3/2*6/5
=3/2
1-7/9÷7/8
1/5*8÷4/5=2
3/5+1/2*4/5=3/5+2/5=1
5/6÷2/3÷5/6=1÷2/3=3/2
1-7/9÷7/8=1-8/9=1/9
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024