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