.5 4x 5 )= 9x 12 x 1 July 8, 2019 16 32 64 128 1 2 4x 5 )= 9x 12 x 1 0.5 4x 5 )= 9x 12 x 1 4x-12 + 5x-15 9x-9 12 x 9 5 5 + 9 = 14