1 5 9 x 4950 July 8, 2019 16 32 64 128 1 5 9 13 x 4950 1 5 9 13 x 4950 solve the equation Tìm x 1 5 9 13 x 4950 Tìm x biết 1 5 9 x 4950 5 + 9 = 14
