3-m/6=1-2m/3
現在要求m的數值，
不知怎樣列算式，和正確答案，
現請教老師答案，謝謝！
初中數學題
2012-07-29 4:43 am
回答 (2)
2012-07-29 6:24 pm
✔ 最佳答案
Case (A):如果
1 2
3 – --- m = 1 - ----- m
6 3
3- (m/6) = 1-2m/3
(2/3)m –(1/6)m = 1 – 3
(4/6)m –(1/6)m = -2
(3/6)m = -2
(1/2) m = -2
m = - 4 (答案)
Case (B)
如果
(3-m) (1-2m)
--------- = -------------
6 3
每邊乘 6
6(3-m)/6 = 6(1-2m)/3
3-m = 2(1-2m)
3-m = 2 -4m
-m + 4m = 2 – 3
3m = -1
m = -1/3 (答案)
2012-07-29 7:28 am
即是...哪條式??
A. (3-m)/6 = (1-2m)/3
B. 3-(m/6) = 1-2(m/3)
A. (3-m)/6 = (1-2m)/3
B. 3-(m/6) = 1-2(m/3)
收錄日期: 2021-04-13 18:51:59
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120728000051KK00610