7x 3 9 4 July 8, 2019 16 32 64 128 7x 3 9 4x 7x 3 4 9 13 5 7x 3 9 4x 3 6 x 2 1 7x 3 4 9 8 7x 3 x 4x 9 5x 4x 3 7x 9 ) 4 4x 5 7x 3 )= 9 x 5 4x 2 )-( 7x 3 )= 9 7x 3 4 9 1 6 10 3 7x 9 4 14x 7x 6 9 3 4 3 7x 2 9 4 9x 1 7 1 7x 3 4 9 8 x 4x 7x 3 9 simplified 9 7x 3 4x 27
