2. 3x-1=x+5
3. 6x+2=3x+14
4. 10x-5=4x+7
更新1:
please be quick
數學 F.1 方程 15分
回答 (7)
2008-03-23 4:58 am
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2008-03-23 11:11 pm
2x+3=x+2
them x+3=2
that means x=-1
3x+1=x+5
2x+1=5
2x=4
x=2
6x+2=3x+14
3x+2=14
3x=12
x=4
10x-5=4x+7
14x-5=7
14x=12
x=0.857......
them x+3=2
that means x=-1
3x+1=x+5
2x+1=5
2x=4
x=2
6x+2=3x+14
3x+2=14
3x=12
x=4
10x-5=4x+7
14x-5=7
14x=12
x=0.857......
2008-03-23 8:12 pm
1. 2x+3=x+2
2x+3-3=x+2-3
2x-x=x-1-x
x=-1
2. 3x-1=x+5
3x-1+1=x+5+1
3x-x=x+6-x
2x=6
x=6/2=3
3. 6x+2=3x+14
6x+2-2=3x+14-2
6x=3x+12
6x-3x=3x+12-3x
3x=12
x=12/3=4
4. 10x-5=4x+7
10x-5+5=4x+7+5
10x=4x+12
10x-4x=4x+12-4x
6x=12
x=6/12=2
2x+3-3=x+2-3
2x-x=x-1-x
x=-1
2. 3x-1=x+5
3x-1+1=x+5+1
3x-x=x+6-x
2x=6
x=6/2=3
3. 6x+2=3x+14
6x+2-2=3x+14-2
6x=3x+12
6x-3x=3x+12-3x
3x=12
x=12/3=4
4. 10x-5=4x+7
10x-5+5=4x+7+5
10x=4x+12
10x-4x=4x+12-4x
6x=12
x=6/12=2
2008-03-23 5:22 am
1.x=-1
2.x=3
3.x=4
4.x=2
Solutions
1.2x-x=2-3
x=-1
2.3x-x=5+1
2x=6
x=3
3.6x-3x=14-2
3x=12
x=4
4.10x-4x=7+5
6x=12
x=2
2.x=3
3.x=4
4.x=2
Solutions
1.2x-x=2-3
x=-1
2.3x-x=5+1
2x=6
x=3
3.6x-3x=14-2
3x=12
x=4
4.10x-4x=7+5
6x=12
x=2
2008-03-23 5:05 am
1. 2x+3=x+2
2x+3-2=x
2x+1=x
1=x-2x
1=-x
x=-1
2. 3x-1=x+5
3x=x+6
3x-x=6
2x=6
x=3
3. 6x+2=3x+14
6x=3x+14-2
6x=3x+12
6x-3x=12
3x=12
x=4
4. 10x-5=4x+7
10x=4x+7+5
10x=4x+12
10x-4x=12
6x=12
x=2
2x+3-2=x
2x+1=x
1=x-2x
1=-x
x=-1
2. 3x-1=x+5
3x=x+6
3x-x=6
2x=6
x=3
3. 6x+2=3x+14
6x=3x+14-2
6x=3x+12
6x-3x=12
3x=12
x=4
4. 10x-5=4x+7
10x=4x+7+5
10x=4x+12
10x-4x=12
6x=12
x=2
2008-03-23 5:02 am
1. 2X-X=2-3 X=-1
2. 3X-X=5+1 2X=6 X=3
3. 6X-3X=14-2 3X=12 X=4
4. 10X-4X=7+5 6X=12 X=2
2. 3X-X=5+1 2X=6 X=3
3. 6X-3X=14-2 3X=12 X=4
4. 10X-4X=7+5 6X=12 X=2
2008-03-23 5:01 am
1. 2x+3=x+2
2x-x+3=x+2-x
X=-1
2. 3x-1=x+5
3x-x-1=x-x+5
2x=6
x=3
3. 6x+2=3x+14
3x=12
x=4
4. 10x-5=4x+7
6x=12
x=2
2x-x+3=x+2-x
X=-1
2. 3x-1=x+5
3x-x-1=x-x+5
2x=6
x=3
3. 6x+2=3x+14
3x=12
x=4
4. 10x-5=4x+7
6x=12
x=2
參考: me
收錄日期: 2021-04-23 17:51:39
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