如题所述
第1个回答 2019-12-16
(4/5+1/3)+(1+1/5+2/3)
=1又2/15+1又13/15
=3
(4/5+1/3)+(1+1/5+2/3)
=(4/5+1/5)+1+(1/3+2/3)
=1+1+1
=3
=1又2/15+1又13/15
=3
(4/5+1/3)+(1+1/5+2/3)
=(4/5+1/5)+1+(1/3+2/3)
=1+1+1
=3
如题所述
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