------
6
2x+3
------
4
=????
P.S. --------=分數線
請用詳盡的列式寫答案!
Thanks
更新1:
Q2. 4x-3 ------ -(減) 8 3x+1 ------ 4 =??????
代數式的簡化
回答 (2)
2009-04-30 1:11 pm
✔ 最佳答案
1. 最小公倍數 L.C.M (lowest common multiple)L.C.M. of 6 and 4 係 12
(3x+1)/6 - (2x+3)/4
=(6x+2)/12 - (6x+9)/12
=(6x + 2 - 6x - 9)/12
=7/12
2. L.C.M. of 8 and 4 係8
(4x-3)/8 - (3x+1)/4
=(4x-3)/8 - (6x+2)/8
=(4x - 3 - 6x - 2)/8
= (-2x - 5)/8
2009-04-30 5:02 am
3x+1)/6－(2x+3)/4=????
Sol
[6,4]=12
A=(3x+1)/6-(2x+3)/4
12A=12*[(3x+1)/6-(2x+3)/4]
=2*(3x+1)－3*(2x+3)
=6x+2-6x－9
=－7
A=－7/12
(3x+1)/6-(2x+3)/4=－7/12
Q.2
不知
Sol
[6,4]=12
A=(3x+1)/6-(2x+3)/4
12A=12*[(3x+1)/6-(2x+3)/4]
=2*(3x+1)－3*(2x+3)
=6x+2-6x－9
=－7
A=－7/12
(3x+1)/6-(2x+3)/4=－7/12
Q.2
不知
收錄日期: 2021-04-28 15:19:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090429000051KK01191