1/2(2x-1)-3(2/3x+1/2)=x/2(2x-1)-6(2/3x+1/2)=x2x-1-4x-3=x3x=-4x=-4/3 x-2[x-3(x+4)-6]=1x-2[x-3x-12-6]=1x-2[-2x-18]=1x+4x+36=15x=-35x=-7 2/7(3y+7)=2-3/2y4(3y+7)=14(2-3/2y)12y+28=28-21y33y=0y=0