20%x(y+10)=5

2009-03-11 7:05 am

20%x(y+10)=5

我想知道點計

答得最好我就他做最佳解答!

thx

請列出步驟,可以比答案都得

回答 (5)

2009-03-11 7:20 am

✔ 最佳答案

20%x(15+10)=5
因為25的20%是5所以Y是15

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2009-03-12 12:55 am

20%x(y+10)=5

20%(xy+10x)=5

xy+10x=5/20%

xy+10x=25

x=1 , y=15

參考: me

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2009-03-11 9:00 am

20%x(y+10)=5

I think you mean

20%*(y+10)=5

y + 10 = 5 / (20/100)

y + 10 = 5 * (100/20)

y + 10 = 25

y = 25 - 10

y = 15

參考: me

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2009-03-11 7:27 am

20%x(y+10)=5
> 20/100x(y+10)=5
>(y+10)=5x100/20
>y+10=25
>y=25-10
>y=15

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2009-03-11 7:25 am

唔知你用%點解，係電腦上%係求餘數
20%x(y+10)=5
x(y+10)=15
當:
x=1, y=5
x=3, y=-5
x=5, y=-7
x=15, y=-9

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