呢一條數唔識牙...!!
2分之m+7分之m=9.......咁m = 幾多??
幫下我呢一條數牙...快..聽日要交!!
2006-10-18 5:05 am
回答 (10)
2006-10-18 5:09 am
✔ 最佳答案
m / 2 + m / 7 = 9 (全式乘 14) 7m + 2m = 126
9m = 126
m = 9
2006-10-17 21:11:22 補充：
更正答案9m = 126m = 126 / 9m = 14
2006-10-18 5:13 am
2分之m+7分之m=9
14分之7m+14分之2m=9
14分之9m=9
9m=116
m=14
14分之7m+14分之2m=9
14分之9m=9
9m=116
m=14
2006-10-18 5:13 am
An easy one:)
m/2 + m/7 = 9
7m/14 + 2m/14 = 9
7m + 2m /14 = 9
9m / 14 = 9
9m = 9 x 14
9m = 126
m = 126/9
So, m = 14
Check it!
14/2 + 14/7 = 9
7 + 2 = 9
m/2 + m/7 = 9
7m/14 + 2m/14 = 9
7m + 2m /14 = 9
9m / 14 = 9
9m = 9 x 14
9m = 126
m = 126/9
So, m = 14
Check it!
14/2 + 14/7 = 9
7 + 2 = 9
參考: myself:)
2006-10-18 5:12 am
m/2+m/7=9
7m/14+2m/14=9
9m/14=9
9m=9(14)
m=14
7m/14+2m/14=9
9m/14=9
9m=9(14)
m=14
2006-10-18 5:10 am
m/2+m/7=9
7m/14+2m/14=9
9m/14=9
9m=9(14)
m=14
7m/14+2m/14=9
9m/14=9
9m=9(14)
m=14
2006-10-18 5:10 am
14*2+14*7=9
m=14ar
m=14ar
2006-10-18 5:10 am
m/2 + m/7 = 9
7m/14 + 2m/14 =9
9m/14=9
9m=126
m=14
7m/14 + 2m/14 =9
9m/14=9
9m=126
m=14
2006-10-18 5:09 am
m/2+m/7=9
(7m+2m)/14=9 ----通分母
9m=9x14
9m=126
m=126/9
m=14
(7m+2m)/14=9 ----通分母
9m=9x14
9m=126
m=126/9
m=14
收錄日期: 2021-04-12 20:00:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061017000051KK04199