Respuesta :

297, 252, 207, 162, 117 , 72 , 27

hope it helps
texaschic101
297 - 252 = 45...so common difference is 45

252 - 45 = 207
207 - 45 = 162
162 - 45 = 117 <==== and u just keep on subtracting 45 and u will find ur next numbers