Simplify the following expression
3a/a-b - b/3b-3a
Pls give accurate steps n answers
F.2 Maths
2014-10-09 3:44 am
回答 (3)
2014-10-09 11:46 am
✔ 最佳答案
答案如下：圖片參考：https://s.yimg.com/lo/api/res/1.2/9kexuP7NMSDic8oK4kaZ_g--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/https://farm4.staticflickr.com/3951/15294459077_4b0f55490c_o.png
https://farm4.staticflickr.com/3951/15294459077_4b0f55490c_o.png
參考: pingshek
2014-10-09 6:39 am
3a/(a-b) - b/(3b-3a)
=3a/(a-b) - b/[-3(a-b)]
=3a/(a-b) + b/[3(a-b)]
=1/(a-b) ( 3a + b/3)
=(9a+b)/[3(a-b)]
=3a/(a-b) - b/[-3(a-b)]
=3a/(a-b) + b/[3(a-b)]
=1/(a-b) ( 3a + b/3)
=(9a+b)/[3(a-b)]
2014-10-09 4:35 am
3a/a-b - b/3b-3a
=1/3 (-9 a-b^2-3 b+9)
=3 (a/a) - b - (b/3) b - 3 a
=(9 - 3 b - b^2 - 9 a)/3
=-3 a-b^2/3-b+3
=1/3 (-9 a-b^2-3 b+9)
=3 (a/a) - b - (b/3) b - 3 a
=(9 - 3 b - b^2 - 9 a)/3
=-3 a-b^2/3-b+3
參考: me
收錄日期: 2021-04-15 16:48:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20141008000051KK00114