解:1/2[3X-1/5X-1/5]-1=X 3/2X-1/10X-2/10-1=X 14/10X-12/10=X 2/5X=6/5 X=3
1/2(3x-1/5x-1/5)-1=x3/2x-x-1/10x-11/10=04/10x=11/10x=11/4