6x 7 2x 15 July 8, 2019 16 32 64 128 6x 9 3x 15 7 2x 13 5x 6x 5 7 2x 15 30 6x 15 7 2x 6x 12 6x 7 x )= 36 2x 3x 15 2x 5y 7 6x 15y 13 6x - 7 = 15 + 2x 2x 7