4 2 x 1 ) 7 15 July 8, 2019 16 32 64 128 4 2 x 1 )+ 7 15 4 x 1 )= 15x 7 2x 5 4 2 7 x 1 13 15 4 1/2 + 1 1/3 4 + 4 = 12 1 - 2 = 4
