3 7 x 2 )= 15 July 8, 2019 16 32 64 128 3 x 7x 2 15 X 3 7x 2 15x 9 X 3 7x 2 15x 105 X 3 7x 2 15x 9 0 X 3 9x 2 15x 7 0 4 3x 7 )- 2 x 15 )= 5 3 2x 9 15 4 2 7 3 x 5 3 7 x 15 2 x is equal to zero 7x 3 x 2 15x X 3 7x 2 15x 25 0 X 3 7x 2 15x 9 factored X 3 7x 2 15x 25 3 7x 2 )= 153 3 5 x 2 15 7 30 3 7 x upon 15 2 x 0
