4a 3 15 July 8, 2019 16 32 64 128 5 4a 3 )- 15 18a Solve 4a 3 15 5 4a 3 )= 15a 4e 3 4a 150 4a 6a 3 8 15 3 4a 7 )= 3a 15 4a 3