-32又1/3-5又1/4-(-3又1/7)+3.25+2又6/7+|-28又1/3| =(28又1/3-32又1/3)+(3.25-5.25)+(2又6/7+3又1/7)=-4-2+6=0
-32又1/3-5又1/4-(-3又1/7)+3.25+2又6/7 + |-28又1/3| =-32又1/3- |-28又1/3| -5又1/4+3.25 +2又6/7 -(-3又1/7) =-4 -2 +6=0