步驟同完整答案!
example.
5x-2 =3x-8
5x-3x-2=-8
2x-2 =-8
2x =-8+2
2x =-6
x =-6x2分1
x =--3
4x+1=2x-7
-4x+1=2x+7
(呢題要寫返中間空既步驟)
-4-1 = -2x+7
-4x+__-1= 7
_x-1 =7
_x =7+_
(最後寫返答案)
-4x-1=2x-7
-4x-1=-2x-7
-4x+1=2x-7
4x-1=2x+7
-5x-1=3x+7
example.
-5x+1 =-2x+7
-5x+2x=7-1
-3x =6
x =-2
2x-5=3x+2
3x-8=-7x-3
2x+7=-3x+2
-7x+6=-x+4
5x+14=-3x+2
-7x-6=-x-4
3x+2=-2x-8
-5x+7=3x+3
2x-5=6x-5
-3x-3=x-7
Maths(f.1) Equations`
2011-01-22 2:58 am
回答 (2)
2011-01-22 3:13 am
✔ 最佳答案
2x-5=3x+22x-3x=2+5
-x=7
x=7
3x-8=-7x-3
3x+7x=-3+8
10x=5
x=1/2
2x+7=-3x+2
2x+3x=2-7
5x=-5
x=-1
-7x+6=-x+4
-7x+x=4-6
-6x=-2
x=1/3
5x+14=-3x+2
5x+3x=2-14
8x=-12
x=-3/2
-7x-6=-x-4
-7x+x=-4+6
-6x=2
x=-1/3
3x+2=-2x-8
3x+2x=-8-2
5x=-10
x=-2
-5x+7=3x+3
-5x-3x=3-7
-8x=-4
x=1/2
2x-5=6x-5
2x-6x=-5+5
-4x=0
x=0
-3x-3=x-7
-3x-x=-7+3
-4x=-4
x=1
2011-01-31 11:13 pm
2x-5=3x+2
-x=7
x=-7
3x-8=-7x-3
10x=5
x=0.5
2x+7=-3x+2
5x=-5
x=-1
-7x+6=-x+4
-6x=-2
6x=2
x=1/3
5x+14=-3x+2
8x=-12
x=-3/2
-7x-6=-x-4
-6x=2
6x=-2
x=-1/3
3x+2=-2x-8
5x=-10
x=-2
-5x+7=3x+3
-8x=-4
8x=4
x=0.5
2x-5=6x-5
-4x=0
x=0
-3x-3=x-7
-4x=-4
4x=4
x=1
I hope I can help you!!!
-x=7
x=-7
3x-8=-7x-3
10x=5
x=0.5
2x+7=-3x+2
5x=-5
x=-1
-7x+6=-x+4
-6x=-2
6x=2
x=1/3
5x+14=-3x+2
8x=-12
x=-3/2
-7x-6=-x-4
-6x=2
6x=-2
x=-1/3
3x+2=-2x-8
5x=-10
x=-2
-5x+7=3x+3
-8x=-4
8x=4
x=0.5
2x-5=6x-5
-4x=0
x=0
-3x-3=x-7
-4x=-4
4x=4
x=1
I hope I can help you!!!
參考: Myself
收錄日期: 2021-04-13 17:47:56
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https://hk.answers.yahoo.com/question/index?qid=20110121000051KK00771