題目:2x=3(1-x)-(x+1)
答案3分之1,要計算過程,快!!!!!!!!!!!!!!!!!!!!!!
中一數學功課問題,只問一題,10分!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2007-11-15 3:04 am
回答 (10)
2007-11-15 3:19 am
✔ 最佳答案
2x=3(1-x)-(x+1) *正負得負*2x=3．1-3．x - x -(+1)
2x=3-3x-x-1 * 負(-)轉到左邊 =正(+)*
2x+3x+x=3-1
6x=2
x=2/6(約簡)
x=1/3
*．=乘號*
參考: 神
2007-11-15 3:20 am
2x=3(1-x)-(x+1)
2x = 3 - 3x - x -1
2x = 2 - 4x
2x + 4x = 2 - 4x + 4x
6x = 2
x =2/6
x = 1/3
@@!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!快!!!!!!!!!!!!!!!!!!!!!! 快!!!!!!!!!!!!!!!!!!!!!!
2x = 3 - 3x - x -1
2x = 2 - 4x
2x + 4x = 2 - 4x + 4x
6x = 2
x =2/6
x = 1/3
@@!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!快!!!!!!!!!!!!!!!!!!!!!! 快!!!!!!!!!!!!!!!!!!!!!!
參考: me
2007-11-15 3:09 am
2x=3(1-x)-(x+1)
2x = 3 - 3x - x -1
2x = 2 - 4x
2x + 4x = 2 - 4x + 4x
6x = 2
x =2/6
x = 1/3
2x = 3 - 3x - x -1
2x = 2 - 4x
2x + 4x = 2 - 4x + 4x
6x = 2
x =2/6
x = 1/3
參考: ME
收錄日期: 2021-04-18 23:48:22
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