6x - 7 = 15 2x July 8, 2019 16 32 64 128 6x 7 15 2x 6x 9 3x 15 7 2x 13 5x 6x 15 7 2x 6x 12 6x 5 7 2x 15 30 15 7 2x 1 )=- 6x 6 x - 7 = 15 + 2 x
