3 3x 4 ≥ 7 2x 3 2 July 8, 2019 16 32 64 128 X 2x 3x 4 7 4x 27 3 3 4x 3 2x 7 )-( 2x 3 3x 2 4 4 3x 2 )+ 3 2x 3 )= 7 2x 5 )+ 28
