方程式問題~~~~~~~~急
回答 (4)
2006-11-16 2:38 am
✔ 最佳答案
1-2[3-(x/2-1)]=x/4+11-2[3-x/2+1]=x/4+1
1-6+x-2=x/4+1
-7+x=x/4+1
-28+4x=x+4
4x-x=4+28
3x=32
x=10and2over3
2006-11-16 2:46 am
1-6-(-2分之-2x+2)=4分之x+1
-5-(2分之2x+2)=4分之x+1
-5=(4分之x+1)+(2分之2x+2)
-5=(4分之x+1)+(4分之4x+4)
-5=4分之5x+5
5x+5=-20
x=-5
錯左唔好話我.....
-5-(2分之2x+2)=4分之x+1
-5=(4分之x+1)+(2分之2x+2)
-5=(4分之x+1)+(4分之4x+4)
-5=4分之5x+5
5x+5=-20
x=-5
錯左唔好話我.....
2006-11-16 2:43 am
1-2(3-(x-1)/2) = (x+1)/4 (如果2分之x-1的意思是(x-1)/2)
1-6+(x-1) = (x+1)/4
1-6+x-1 = (x+1)/4
-6+x = (x+1)/4
-24+4x = x+1
3x = 25
x = 25/3
1-2(3-((x/2)-1)) = (x/4)+1 (如果2分之x-1的意思是(x/2)-1)
1-6+2((x/2)-1) = (x/4)+1
1-6+x-2 = (x/4)+1
x-(x/4) = 8
3x/4 = 8
x = 32/3
1-6+(x-1) = (x+1)/4
1-6+x-1 = (x+1)/4
-6+x = (x+1)/4
-24+4x = x+1
3x = 25
x = 25/3
1-2(3-((x/2)-1)) = (x/4)+1 (如果2分之x-1的意思是(x/2)-1)
1-6+2((x/2)-1) = (x/4)+1
1-6+x-2 = (x/4)+1
x-(x/4) = 8
3x/4 = 8
x = 32/3
參考: myself
收錄日期: 2021-04-13 15:53:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061115000051KK02387