9 4 m 5 ) 4m July 8, 2019 16 32 64 128 9 4 m 5 )+ 4m 8 2 4m 9 )= 6m 4 m 5 4m 5 4m 9 3 5 4m 5 7 or 4m 5 - 9 4 9 m 4 5 m 4 m 5 m