4 x 5 ) 4 2 1 8x 48 July 8, 2019 16 32 64 128 4 x 5 )+ 4 2 1 8x 48 8) 5 4(0 5x + 4) =8 1(4+x) 4 x 2 5/8 (4 5-x)×5 8=8 7
