1 2 9x7 8 July 8, 2019 16 32 64 128 2 9 7 8 x 1 8x 9 x 7 x 1 )- 2 X 7 4 )+ 2 8 9 1 2 9 7 8 x 1 3 7 1 2 x 8 5 9 9 7 8 x 10 1 2 9 7 8 x 10 1 2 prop 9 x 1 )= 7 2 9x 8 9 7 8 x 10 1 2 f propeller 9 7 8 x 10 1 2 yamaha 9 7 8 x 10 1 2 f 2 9 7 8 nhân x 1 B 2 9 7 8 x 1 Tìm x 2 9 7 8 x 1