(2/3+2/5)÷(2/3-2/5)=16/15÷4/15=16/15×15/4=4祝你学习进步!如有疑问请追问,理解请及时采纳!(*^__^*)
(2/3+2/5)/(2/3-2/5)=(10+6)/(10-6)=4或者(2/3-2/5)/(2/3+2/5)=(10-6)/(10+6)=1/4
(2\3-2\5)除以(2\3+2\5)=1\4绝对正确!求采纳
4