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

### Instruction:
Rebecca bought 22 items for her camping trip, including tent stakes, packets of drink mix, and bottles of water.  She bought 3 times as many packets of drink mix as tent stakes.  She also bought 2 more bottles of water than she did tent stakes.  How many tent stakes did she buy?

### Response:
 กำหนดให้ x เป็นจำนวนเสาเต็นท์
แพ็คเก็ตผงปรุงอาหาร: 3x
ขวดน้ำ: x+2
รวม: x+3x+x+2=22
5x+2=22
5x=20
x=<<4=4>>4 เสาเต็นท์