4x 6 3 x 9 2 July 8, 2019 16 32 64 128 7x 3 9 4x 3 6 x 2 9 2x 6 )-( x 3 )= 4x 18 6 3 4x )- 2 x 5y 9 6xy - 4y + 6 - 9x 4x-6 2=3 9 4 6 x 9