1a. 2分3x=負4分3x
1e. 3分1(1減2x)+6分1(4減5x)+42分之1
問一些maths??急.................help*
2007-07-17 6:40 am
回答 (2)
2007-07-17 6:04 pm
✔ 最佳答案
1a). 3x/2 = -3x/41/2 = -1/4 ???
Error!
1e). 1/3 (1-2x) + 1/6 (4-5x) + 1/42
= (1-2x) / 3 + (4-5x)/6 + 1/42
= [14 (1-2x) + 7 (4-5x) + 1] / 42
= (14 - 28x + 28 - 35x + 1) / 42
= (-63x + 43) / 42
= - (63x - 43) / 42
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070716000051KK05432