問數學!!(急....)
回答 (7)
2007-05-10 12:59 am
a+20+80=3a.... 咁a=幾多??
a+100=3a
2a=100
a=50
a+100=3a
2a=100
a=50
2007-05-09 6:47 am
a+20+80=3a
20+80=3a-a
100=2a
50=a ←100除2
a=50
20+80=3a-a
100=2a
50=a ←100除2
a=50
2007-05-09 5:56 am
a+20+80=3a.... 咁a=幾多??
a+100=3a
2a=100
a=50
a+100=3a
2a=100
a=50
2007-05-09 5:50 am
a+20+80=3a
20+80=3a-a
2a=100
a=50
20+80=3a-a
2a=100
a=50
2007-05-09 5:48 am
a+20+80=3a
a+100=3a
100=3a - a
100=2a
100/2=2a/2
50=a
a=50 ---------ans
a+100=3a
100=3a - a
100=2a
100/2=2a/2
50=a
a=50 ---------ans
參考: ME
2007-05-09 5:46 am
a+20+80=3a
a+100=3a
100=3a-a
100=2a
100/2=a
50=a
a=50
a+100=3a
100=3a-a
100=2a
100/2=a
50=a
a=50
收錄日期: 2021-04-12 20:02:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070508000051KK04674