7/9+1-2/3=???
Hai thung A va B co tong cong 315l dau.Neu co 25l dau o thung A do sang thung B thi thung B nhieu hon thung A la 7l dau.Hoi luc dau moi thung co bn lit dau?
Ai giai giup tui vs ak,giai het ma nhanh thi cho 10 tick lun nhoa,mong cac ban iu giai ho,iu lem a~I LOVE YOU PAC PAC:33>33