13 6 3 4x x 5 3 5 4 July 8, 2019 16 32 64 128 - 13 x 6 + 53 13 4x - 5 1 = 3 4x + 4 2 13. 4x + 1 = 5(x - 3y) - 6 3(x+6y)+4=9y+19 13 - 3 * 6 / 4 3
