你多大用英语怎么说?
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你多大用英语怎么说?你多大用英语怎么说? 你多大用英语怎么说?Howoldareyou?Howoldareyou?Whatageareyou?howoldareyouHowoldareyou
你多大用英语怎么说?
你多大用英语怎么说?
你多大用英语怎么说?
How old are you?
How old are you?
What age are you?
how old are you
How old are you.
how old are you
How old are you?
两式相加得 2x=5,x=2.5 ,y=-0.5,代入分式
（2.5-0.5)(2.5+0.5)/(2.5x2.5+0.5x0.5)
=6/6.5
=12/13
祝您步步高升
期望您的采纳，谢谢