我不知如何做，請各高手指點迷津中二數急！

🎓 學業台小學及中學教育

Fire inflammation duke

2008-09-13 3:16 am

In each of the folloing, make the letter in square brackets the subject of the
formula.

y=a+x/a-x [x]

更新1:

y=a+x/a-x { [x] }it is the subject

回答 (2)

Virginia

2008-09-15 7:10 pm

✔ 最佳答案

y=a+x/a-x
y(a-x)=a+x
ya+yx=a+x
yx-x=a-ya
(y-1)x=a-ya
x=(a-ya) / (y-1)

參考: myself

👍 0 👎 0

[匿名]

2008-09-13 6:49 am

y=a+x/a-x
y(a-x)=a+x
ya+yx=a+x
yx-x=a-ya
x(y-1)=a-ya
x=(a-ya) / (y-1)

👍 0 👎 0