3x 9 x 1 ) 7x July 8, 2019 16 32 64 128 3x 9 x 1 )+ 7x 3x 9 x 1 )+ 7x 15 Simplify 3x 9 x 1 )+ 7x 3x 2 7x 9 x 1 9 x 2 )-( 3x 1 )= 7 7x 3 x 3 = 9
