2分之x 加 x =6
3(3x-4)-2(x-1)=11
4分之3x 減 3分之2x =5
5(m-3)=2(m+3)
2(5m-8)+3(2m)=0
要過程和答案
數學...唔該曬
2006-12-05 3:24 am
回答 (2)
2006-12-05 3:36 am
2分之x+x=6
1.5x =6
1.5x 6
------- = ------
1.5 1.5
x =4
3(3x-4)-2(x-1)=11
(9x-12)-(2x+2)=11
9x-12-2x-2 =11
7x-14 =11
7x-14+14 =11+14
7x =25
7x 25
-------- =---------
7 7
x = 4
3------
7
1.5x =6
1.5x 6
------- = ------
1.5 1.5
x =4
3(3x-4)-2(x-1)=11
(9x-12)-(2x+2)=11
9x-12-2x-2 =11
7x-14 =11
7x-14+14 =11+14
7x =25
7x 25
-------- =---------
7 7
x = 4
3------
7
參考: me
2006-12-05 3:35 am
1. x/2 + x = 6
3/2x=6
x=4
2. 3(3x-4)-2(x-1)=11
9x-12-2x+2=11
7x-10=11
7x=21
x=3
3. 3x/4-2x/3=5
9x/12-8x/12=5
x/12=5
x=60
4. 5(m-3)=2(m+3)
5m-15=2m+6
3m=21
m=7
5. 2(5m-8)+3(2m)=0
10m+16+6m=0
16m+16=0
16m=-16
m=-1
3/2x=6
x=4
2. 3(3x-4)-2(x-1)=11
9x-12-2x+2=11
7x-10=11
7x=21
x=3
3. 3x/4-2x/3=5
9x/12-8x/12=5
x/12=5
x=60
4. 5(m-3)=2(m+3)
5m-15=2m+6
3m=21
m=7
5. 2(5m-8)+3(2m)=0
10m+16+6m=0
16m+16=0
16m=-16
m=-1
參考: me
收錄日期: 2021-04-23 18:59:55
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https://hk.answers.yahoo.com/question/index?qid=20061204000051KK03309