2/3[3/2（1/4x-1）-7/2]=x [3/2（1/4x-1）-7/2]=3/2*x 3/2（1/4x-1）-7/2=3/2*x 3/8*x-3/2*x-3/2-7/2=0 -9/8*x=5 x=-40/9
