(1/2x+1)+[1/2(1/2x-1)+1]+[1/2(1/2(1/2x-1)-1)+3]=x

(1/2x+1)+[1/2(1/2x-1)+1]+[1/2(1/2(1/2x-1)-1)+3]=x 1/2x+1+(1/4x-1/2+1)+[1/2(1/4x-1/2-1)+3]=x 1/2x+1+1/4x+1/2+(1/8x-1/4-2/4+3)=x 4/8x+1+2/8x+1/2+1/8x+9/4=x 7/8x+15/4=x 1/8x=15/4 |*8 x= 30