x=-1/3+1/4=-1/12
2/3-x-1/4=1/3(8-3)/12-x=1/35/12-x=1/3x=5/12-1/3x=(5-4)/12x=1/12
2/3-x-1/4=1/3x=2/3-1/4-1/3x=1/12
-x=1/3-2/3+1/4-x=-1/12x=1/12
2/3-1/4-1/3=xx=1/3-1/4x=1/12
