計法（ｍａｔｈｓ）快

2(b+2)/3-3/4=2b+1/4
(2b+4/3-3/4)*12=(2b+1/4)*12
8b+16-9=24b+3
8b+7-24b=24b+3-24b
-16b+7-7=3-7
-16b/16=-4/16
b=0.25

2006-11-12 19:23:31 補充：
係-0.25

2(b+2)/3 - 3/4 = (2b+1)/4 全式乘12
8(b+2)-9=3(2b+1)
8b+16-9=6b+3
2b= -4
b= -2

2(b+2)/3 -3/4=2b +1/4
8(b+2)/12-9/12=24b/12+3/12
(8b+16-24b)/12=(3+9)/12
-16b/12=(12-16)/12
-192b=-48
b=0.25

係條題目係咪(2(b+2)over3)-(3over4)=2b+(1/4)
計法如下:
２（ｂ＋２）／３－３／４＝２ｂ＋１／４
>>2(b+2)/3 = 2b+1
>>2b+4=6b+3
>>4-3=6b-2b
>>1=4b
>>1/4=b

2006-11-12 19:08:58 補充：
３分之２（ｂ＋２）減４分之３＝４分之２（ｂ＋１） solution:３分之２（ｂ＋２）減４分之３＝４分之２（ｂ＋１） >>(2(b+2))/3=(2(b+1)+3)/4>>8(b+2)=6(b+1)+9>>8b+16=6b+15>>2b=-1>>b=-1/2

no solution