兩數差為10,若較小數的４倍與較大數的３分１之和是２５,求該兩數.
請列式
難題-方程式(中一)
2006-12-24 9:23 pm
回答 (2)
2006-12-24 9:29 pm
✔ 最佳答案
較小數:x,較大數:x+104x+1/3(x+10)=25
4x+x/3+10/3=25
13x+10=75
較小數x=5
,較大數:x+10=5+10=15
2006-12-24 9:30 pm
let y be the smaller number,then the larger number is y+10.
1/3(y+10)+4y=25
4/1/3y+10/3=25
13/3y+10/3=25
13/3y=65/3
y=5
the smaller number is 5,then the larger number is 5+10=15
1/3(y+10)+4y=25
4/1/3y+10/3=25
13/3y+10/3=25
13/3y=65/3
y=5
the smaller number is 5,then the larger number is 5+10=15
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061224000051KK01672