19.25+9.95+38.15
=19.25+9.5.19+19.2.15
=19.25+45.19+19.30
=19.(25+45+30)
=19.100
=1900
tick cho minh voi nha!
=19.25+9.5.19+2.15.19
=19.25+19.45+19.30
=19(25+45+30)
=19.100
=1900
19.25+9.95+38.15=19.5.5+9.95+38.15=5.95+9.95+38.15=95.(9+5)+38.15=95.14+38.15=19.5.14+2.19.15=19.70+19.30=19.(70+30)=19.100=1900
ủng hộ tròn 550 nha