cong thuc tinh hieu ti va tong ti la
ve so do dua vao ti so
tim tong,hieu so phan bang nhau
tim so be la tong,hieu chia cho tong so phan bang nhau nhan voi so phan so be
tim so lon la hieu cong voi so be
tong tru so be
cong thuc tinh tong , hieu ti la
ve so do dua ti so
tim tong , hieu so phan bang nhau
tim so be la tong , hieu chia cho tong ,hieu so phan bang nhau nhan voi so be
tim so lon la tong tru so be
hieu cong voi so be
cong thuc tinh hieu ti la
ve so do theo ti so
tim hieu so phan bang nhau
tim so be hieu/hieu so phan bang nhau roi nhan voi so phan so be
tim so lon ban hieu cong voi so be
cong thuc tinh tong ti
ve so do dua vao ti so
tim tong so phan bang nhau
tong chia tong so phan bang nhau nhan voi so phan so be
so lon la tong tru cho so be
