Maths 10Marks
回答 (15)
2006-10-28 7:16 am
✔ 最佳答案
3(x+4)-4(x-2)=3x3x + 12 - 4x + 8 = 3x
3x-4x+12+8=3x
-x+20=3x
-x+20+x=3x+x
20 =4x
4x=20
4x/4=20/5
x = 5
2006-10-27 2:06 am
-------3(x+4)-4(x-2)=3x
---------3x+12-4x+8=3x
------------------12+8=3x-3x+4x
----------------------4x=20
------------------------x=5
---------3x+12-4x+8=3x
------------------12+8=3x-3x+4x
----------------------4x=20
------------------------x=5
2006-10-27 1:45 am
3(x+4)-4(x-2)=3x
3x+12-4x+8=3x
-x+20=3x
20=3x+x
20=4x
x=5
3x+12-4x+8=3x
-x+20=3x
20=3x+x
20=4x
x=5
2006-10-27 1:45 am
3 (x+ 4) - 4 (x - 2) = 3x
3x + 12 - 4x + 8 = 3x
-x + 20 = 3x
-4x = -20
x = 5
3x + 12 - 4x + 8 = 3x
-x + 20 = 3x
-4x = -20
x = 5
2006-10-27 1:44 am
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2006-10-27 1:44 am
3x + 12 -4x +4 = 3x
12 + 4 = 3x - 3x + 4x
16 = 4x
4 = x
x=4
2006-10-26 17:45:46 補充：
3x + 12 -4x +8= 3x12 + 8 = 3x - 3x + 4x20= 4x5 = xx=5
12 + 4 = 3x - 3x + 4x
16 = 4x
4 = x
x=4
2006-10-26 17:45:46 補充：
3x + 12 -4x +8= 3x12 + 8 = 3x - 3x + 4x20= 4x5 = xx=5
2006-10-27 1:44 am
3( x + 4 ) - 4( x - 2) = 3x
3X + 12 - 4X + 8 = 3X
-4X = -20
X = 5
3X + 12 - 4X + 8 = 3X
-4X = -20
X = 5
2006-10-27 1:43 am
3x+12-4x+8=3x
12+8=3x-3x+4x
20=4x
x=5
12+8=3x-3x+4x
20=4x
x=5
2006-10-27 1:43 am
3(x+4)-4(x-2)=3x
3x+12-4x+8=3x
-4x=-20
x=5
3x+12-4x+8=3x
-4x=-20
x=5
收錄日期: 2021-04-12 22:33:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061026000051KK02490