Toi co mot ban do dang duong thang. Toi muon doc toa do X voi Y=50 tren duong thang trong ban do. Toi nghe noi voi excel 2003 co the tao mot diem bat ky tren ban do sau do di chuyen no den bat ky toa do nao tren ban do ma minh muon doc X va Y. NHung ma trong excel 2007 toi khong move duoc nhung diem tren ban do , nen toi khong biet lam sao doc duoc toa do cua diem toi can. Please giup toi. Cam on nhieu (vietnamese language).