代數....f.1

2007-10-30 12:29 am

x-6=x-3/4

(其實係4分之x-3)

回答 (4)

2007-10-30 1:16 am

x-6 = x-3/4
x*4-6*4= x-3/4*4
4x-24 = x-3
4x-24+3 = x-3+3
4x-21+21 = x-x+21
3x =21
x =7

👍 0 👎 0

2007-10-30 12:59 am

4(X - 6)=X - 3
4X - 24 =X - 3
4X - X =24 - 3
3X = 21
X = 4

2007-10-29 19:06:23 補充：
正確答案係X=7至o岩。

參考: 自己

👍 0 👎 0

2007-10-30 12:51 am

x-6=(x-3)/4
4*(x-6)=(x-3)/4*4 (兩邊乘四)
4x-4*6=x-3
4x-24=x-3
4x-24+3=x-3+3
4x-21=x
4x-x=21 (兩邊淢四)
3x=21
3x/3=21/3
x=7

答案是x=7。

參考: Myself

👍 0 👎 0

2007-10-30 12:34 am

4x-24=x-3
3x=21
x=7

參考: me

👍 0 👎 0