Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
A new edition Geometry book has 450 pages which are 230 pages less than twice as many pages as the old edition. How many pages did the old edition Geometry book have?

### Response:
 Hebu x iwe idadi ya kurasa za kitabu cha zamani cha Jiometri
Kitabu kipya cha Jiometri kina mara mbili ya idadi ya kurasa za kitabu cha zamani-230= 2x -230 =450 kurasa
2x = 450+230 = 680
x = <<340=340>>340 kurasa