2x 3 15 =- 7 July 8, 2019 16 32 64 128 2x 3 7x 15 180 5 2x 3 )= 7x 15 15 2x 3 7 x 7 3 2x )= 15 1 x 2x 3 7x 15 2x 3 7x 15 2 2x 3 15 or 3 7x 17 2x 3 (- 3 x ) - 15 7x 2x 3 3x 7 15 63 Factorise 2x 3 7x 15 2x x 11 3 7x 15 2x 3 3x 2 7x 15 x 2 4 2x 3 1 7x 15 3 class 8 3 7x )/( 15 2x )= 0 2x 3 1 7x 15 3 verification
