1 2 3 4 x 55 July 8, 2019 16 32 64 128 1 2 3 4 5 x 55 Tìm x biết 1 2 3 4 x 55 Calcular x en 1 2 3 4 x 55 3 x 4 )+ 2 6x 1 )= 55 + 1 + 2 + 3 + 4 + 5 1 2 + 3 4
