Y
yamailuk


4c -3a=ac (1)
tri tuyet doi(a) nhan tri tuyet doi(c)= 6
thong cam khng biet danh dau tri tuyet doi the nao ca
mong moi nguoi gia dum cai
tri tuyet doi(a) nhan tri tuyet doi(c)= 6
thong cam khng biet danh dau tri tuyet doi the nao ca
mong moi nguoi gia dum cai