(1)1/2(x-4)+1/6(3x-2)=2x
两边同乘以2
x-4+1/3(3x-2)=4x
x-4+x-2/3=4x
-4-2/3=2x
-14/3=2x
x=-7/3
(2)7(m+1)=12-(x+4)
7m+7-12=-x-48
x=-48-7m-7+12
x=-7m-43
(3)4x+3(2x-3)=12-(x+4)
4x+6x-9=12-x-4
11x=17
x=17/11\
(4)2/3【3/2(x-4）-6】=2x+1
(x-4)-4=2x+1
x=-9