X 4 7 5 9 2 3 July 8, 2019 16 32 64 128 7 8 9 x 4 5 6 1 2 3 X 1 2 3 4 y 5 7 9 11 7 4 x 29 5 7 5 x 9 4 3 2 13 39 5 9 2 x 4 7 X 4 7 5 phần 9 2 3 Tìm x x 4 7 5 9 2 3 2) 9 − 7(x + 3) = 5 − 4x X - 4 5 = - 9 3
