12 3 4 x 9 July 8, 2019 16 32 64 128 12 3 4 x 9 1 2 12 4 x 3 )= 39 9x 3 5 x 12 )=- 4 x 9 )+ 1 3 * 16 x 12 x 4 * 9 x 7 12 3 4 x 2 9 2 12 x 3 5 4 6 x 9 2 12 3 x 4 9 8 2 12 x 3 )= 4 2x 9 )+ 4x 5 12 3 8 x 4 9 Tính 7 12 3 4 x 2 9 12 x 3 )= 4 2x 9 )+ 4x answer 12 x 3 )= 4 2x 9 )+ 4x how many solutions 12 4 x 34 2 3 9 12 3 8 x 9 1 4
