5x 1 3x 4x 7 July 8, 2019 16 32 64 128 3x 1 4x 2 5x 7 3x 7 5x 1 4x 8 3x 2 5x 1 4x 2 7x 19 7 4x 1 )- 3x 5x 13 2x 1 4x 7 5x 3x Factoriser 4x 1 3x )- 4x 7 5x 5 x 7 = 35