方程式 .............要列式

2008-03-26 9:22 pm
4(2x-6)+8= (x-6)/ 2+2

please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

回答 (3)

2008-03-26 9:27 pm
✔ 最佳答案
4(2x-6)+8 = (x-6)/2 +2
  8x-24+8 = (x-6)/2 +2
    8x-16 = (x-6)/2 +2
   16x-32 = x-6+4
      15x = 30
        x = 2

2008-03-26 13:42:40 補充:
鄙視樓下copycat..
2008-03-30 1:18 am
4(2x)+8=(x-6)/2+2
4(2x)=(x-6)/2
8x=(x-6)/2
16x=x-6
16x+6=x
6=x-16x
6=-15x
6/-15=x
x=0.4
參考: ....
2008-03-26 9:37 pm
4(2x-6)+8=(x-6)/2 +2
  8x-24+8=(x-6)/2 +2
    8x-16=(x-6)/2 +2
   16x-32=x-6+4
16x-x-32 =x-6+4  -x  
15x-32+32=-6+4+32
      15x=30
        x=2 ,,


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