（1）7x-[x-1/2(x-1)]=2/3(x-1)
42x-6x+3(x-1)=4(x-1)
36x=(x-1)
35X=-1
X=-1/35
（2）3/4[4/3(1/2x-1/4)-16]=3x+1
(1/2x-1/4)-12=3x+1
2x-1-48=12x+4
10x=-53
x=-53/10第二题为什么减12.。3/4[4/3(1/2x-1/4)-16]=3x+1(1/2x-1/4)-3/4*16=3x+1(1/2x-1/4)-12=3x+12x-1-48=12x+410x=-53x=-53/10哦。。那第一题呢。亲。写详细点。谢了7x-[x-1/2(x-1)]=2/3(x-1)6*7x-6*[x-1/2(x-1)]=6*2/3(x-1)42x-[6x-3(x-1)]=4(x-1)42x-6x+3(x-1)=4(x-1)42x-6x=4(x-1)-3(x-1)36x=(x-1)35X=-1X=-1/35