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

### Instruction:
Together 3 friends watched 411 short videos. Kelsey watched 43 more than Ekon. Ekon watched 17 less than Uma. How many videos did Kelsey watch?

### Response:
 ให้ x เป็นจำนวนวิดีโอที่ Uma ชม
Ekon = x - 17
Kelsey = (x - 17) + 43 = x + <<(-17)+43=26>>26
รวม = x + x - 17 + x + 26 = 411
3x + 9 = 411
3x = 402
x = <<134=134>>134
Kelsey = 134 + 26 = <<134+26=160>>160 วิดีโอ