好易,小學都識,急

2007-10-25 6:21 am
4(x-2)-5(3+2x)=x-8

要5行步驟

回答 (4)

2007-10-26 1:24 am
✔ 最佳答案
4(x-2)-5(3+2x)=x-8
4x-8-15+10x =x-8
4x+10x-x=8+8+15
13x =31
x =2.4

2007-10-25 17:24:34 補充:
上面三個可能錯

2007-10-25 17:25:47 補充:
我意思是,上面三個解答者可能錯

2007-10-25 17:34:09 補充:
4(x-2)-5(3 2x)=x-84x-8-15 10x =x-8 4x 10x-x = -8 8 15 13x =15 x=1.2(而我也可能錯)
參考: me
2007-10-25 8:07 pm
4X-8-15-10X=X-8
4X-10X-X=23-8
-6X-X=15
-7X=15
X=-15/7
2007-10-25 6:37 am
4(x-2)-5(3+2x)=x-8
4x-8-15-10x=x-8
4x-10x-x=8+15-8
6x=15
x=-15/7
參考: from me
2007-10-25 6:34 am
4x -8 - 15 - 10x = x - 8
-6x -23 = x - 8
-6x - x = -8 + 23
-7x = 15
x = -15/7


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