a)
1/2x-3/4[x-(4x-1)]=1-(x+1)/4
1/2x-3/4(x-4x-1)=1-(x+1)/4
1/2x+9/4x+3/4=1-(x+1)/4 |·4
2x+9x+3=4-x-1
11x+3=3-x
11x+x=3-3
12x=0 |:12
x=0
b)
2/3(3x-1)-3/2[2x+3(x-2)]=1
2x-2/3x-3/2(2x+3x-6)=1
2x-2/3-15/2x+9=1
2x+25/3-15/2x=1 |·6
12x+50-45x=6
12x-45x+50=6
-33x+50=6
-33x=6-50
-33x=-44 |:(-33)
x=4/3=1 1/3
