1/3(x+2)+1/2(x+1)=3-1/4(x+3)
1/3X+2/3+1/2X+1/2=3-1/4X-3/4
1/3X+1/2X+1/4X=3-3/4-2/3-1/2
4X+6X+3X=36-9-8-6
13X=13
X=1
有疑问,请追问
解:1/3X+2/3+1/2X+1/2=3-1/4X-3/4
1/3X+1/2X+1/4X=3-3/4-2/3-1/2
13/12X=23/12
X=23/13
方法是正确的,结果不知道,因为你急着要!呵呵