求救簡單數學

👨🏻‍🏫 學術台數學

[匿名]

2009-10-24 8:03 am

x-y/x+y 除 2x-2y/y 簡化至 y / 2(x+y) 的過程

回答 (3)

happy_ling1017

2009-10-25 5:42 pm

✔ 最佳答案

x-y/x+y除2x-2y/y
=x-y/x+y乘y/2x-2v
=x-y/x+y乘y/2(x-y)
=y/2(x+y)

參考: ME

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sap00acm

2009-10-24 3:01 pm

(x-y/x+y) / (2x-2y/y)
= (x-y/x+y) * (y/2x-2y)
= (x-y/x+y) * [y/2(x-y)]
= y(x-y) / 2(x+y)(x-y)
= y / 2(x+y)

參考: me

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[匿名]

2009-10-24 8:11 am

x-y/x+y 除2x-2y/y

= x-y/x+y 乘　y/2(x-y)

= y/x+y

參考: myself

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