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Maths Q
2009-03-31 5:00 am
回答 (1)
2009-03-31 5:56 am
✔ 最佳答案
12(a)(i) 2x+3y=13____________(1)
3x-y=3_______________(2)
Solve (1) and (2),
x=2 , y=3
(ii)
a+b=2_________________(3)
a-b=3_________________(4)
Solve (3) and (4),
a=2.5 , b=-0.5
(b)(i)
2x+y=10_____________________(5)
4x+y=16_________________(6)
Solve (5) and (6),
x=3 ,y=4
(ii)
1/a=3
a=1/3
1/b=4
b=1/4
收錄日期: 2021-04-23 20:36:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090330000051KK01640