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

### Instruction:
A chihuahua, pitbull, and great dane weigh a combined weight of 439 pounds. The pitbull weighs 3 times as much as the chihuahua.  The great dane weighs 10 more pounds than triple the pitbull.  How much does the great dane weigh?

### Response:
 ให้ x เป็นน้ำหนักของชิวาวา
ปิตบูล: 3x
เกรทเดน: 10+3(3x)=10+9x
รวม: x+3x+10+9x=439
13x+10=439
13x=429
x=<<33=33>>33 ปอนด์
เกรทเดน: 10+9(33)=307 ปอนด์