中一題目 請解答
回答 (9)
2006-11-22 7:31 am
✔ 最佳答案
x+2(x-1)=1x+2x-2=1
x+2x=1+2
3x=3
x=1
2006-11-22 8:41 am
x+2(x-1)=1
x + 2x-2 = 1
3x-2 = 1
3x-2+2 = 1+2-----(兩邊都減2)
3x = 3
3x/3 = 3/3-----(兩邊都除3)
x = 1
2006-11-22 00:43:34 補充：
錯了,是加2才對3x-2 2 = 1 2-----(兩邊都加2)
x + 2x-2 = 1
3x-2 = 1
3x-2+2 = 1+2-----(兩邊都減2)
3x = 3
3x/3 = 3/3-----(兩邊都除3)
x = 1
2006-11-22 00:43:34 補充：
錯了,是加2才對3x-2 2 = 1 2-----(兩邊都加2)
2006-11-22 8:00 am
x+2(x-1)=1
x+2x-2=1
3x=1+2
3x=3
x=1
It is not so difficult...
x+2x-2=1
3x=1+2
3x=3
x=1
It is not so difficult...
2006-11-22 7:33 am
x+2x-2=1
3x =3
x =1
3x =3
x =1
2006-11-22 7:32 am
x+2(x-1)=1
x+2x-2=1
3X=1+2
3x=3
x=3/3
x=1
x+2x-2=1
3X=1+2
3x=3
x=3/3
x=1
2006-11-22 7:32 am
3x - 2 = 1
x = 1
x = 1
2006-11-22 7:31 am
x+2(x-1)=1
x+2x-2=1
3x=3
x=1
x+2x-2=1
3x=3
x=1
2006-11-22 7:30 am
x+2x-2=1
3x=1+2
x=1
3x=1+2
x=1
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