5x 13 x ≥ 9x 7 July 8, 2019 16 32 64 128 5x 13 x 9x 7 5x 13 x is greater than or equal to 9x 7 13x - 7x + 5y - 9y + 1 5x + 13 + 7 5x - 13 13 5 x 7
