8 4x 7 5 x 6 2 July 8, 2019 16 32 64 128 8 1 4x 7 )= 5 x 6 )- 2 8(2x + 3 - 4x - 5) - 6x - 7) 4 5 (8x + 20) = 6 (6x + 15)
