Maths (F.1)
回答 (5)
2006-11-01 5:58 am
✔ 最佳答案
(1 / 3)(2 - x) - (1 / 2)(4x + 1) = (1 / 4)(x - 1)[(1 / 3)(2 - x) - (1 / 2)(4x + 1)] * 12 = (1 / 4)(x - 1) * 12
4(2 - x) - 6(4x + 1) = 3(x - 1)
8 - 4x - 24x - 6 = 3x - 3
2 - 28x = 3x - 3
2 + 3 = 28x + 3x
31x = 5
x = 5 / 31
2006-11-01 9:36 pm
1/3 (2 - x) - 1/2 (4x + 1) = 1/4 ( x - 1 )
2/3-1/3x-2x-1/2=1/4x-1/4
4/6-1/3x-2x-3/6=1/4x-1/4
1/6-1又2/3=1/4x-1/4
1/6+1/4=1/4x+1又2/3x
2/12+3/12=11/12x
5/12=11/12x
x=5/11
2/3-1/3x-2x-1/2=1/4x-1/4
4/6-1/3x-2x-3/6=1/4x-1/4
1/6-1又2/3=1/4x-1/4
1/6+1/4=1/4x+1又2/3x
2/12+3/12=11/12x
5/12=11/12x
x=5/11
參考: experienced teacher(Mr Chan)
2006-11-01 8:43 am
1/3 (2 - x) - 1/2 (4x + 1) = 1/4 ( x - 1 )
4 (2 - x) - 6 (4x + 1) = 3 (x - 1)
8 - 4x - 24x - 6 = 3x - 3
- 4x - 24x - 3x = - 3 - 8 + 6
- 31x = - 5
x = 5/31
4 (2 - x) - 6 (4x + 1) = 3 (x - 1)
8 - 4x - 24x - 6 = 3x - 3
- 4x - 24x - 3x = - 3 - 8 + 6
- 31x = - 5
x = 5/31
2006-11-01 6:30 am
1/3 (2 - x) - 1/2 (4x + 1) = 1/4 ( x - 1 )
12( 1/3 ) (2 - x ) - 12( 1/2 ) (4x + 1 ) = 12( 1/4 )( x - 1 )
4 (2 - x) - 6 (4x + 1) = 3 ( x - 1 )
8 - 4x - 24x - 6 = 3x - 3
2 - 28x = 3x - 3
31x = 5
x = 5/31
2006-10-31 22:32:45 補充：
一定對 ! ! ! !
12( 1/3 ) (2 - x ) - 12( 1/2 ) (4x + 1 ) = 12( 1/4 )( x - 1 )
4 (2 - x) - 6 (4x + 1) = 3 ( x - 1 )
8 - 4x - 24x - 6 = 3x - 3
2 - 28x = 3x - 3
31x = 5
x = 5/31
2006-10-31 22:32:45 補充：
一定對 ! ! ! !
2006-11-01 6:05 am
1/3 (2 - x) - 1/2 (4x + 1) = 1/4 ( x - 1 )
2/3-1/3x-2x-1/2=1/4x-1/4
4/6-1/3x-2x-3/6=1/4x-1/4
1/6-1又2/3=1/4x-1/4
1/6+1/4=1/4x+1又2/3x
2/12+3/12=11/12x
5/12=11/12x
x=5/11
2/3-1/3x-2x-1/2=1/4x-1/4
4/6-1/3x-2x-3/6=1/4x-1/4
1/6-1又2/3=1/4x-1/4
1/6+1/4=1/4x+1又2/3x
2/12+3/12=11/12x
5/12=11/12x
x=5/11
參考: me
收錄日期: 2021-04-12 22:55:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061031000051KK04621