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

### Instruction:
Thomas has 25 drawings to display. 14 of the drawings were made using colored pencils. 7 of the drawings were made using blending markers. The rest of the drawings were made with charcoal. How many are charcoal drawings?

### Response:
 โทมัสทำรูปด้วยดินสอสีและมาร์คเกอร์ผสมสีทั้งหมด 14 + 7 = <<14+7=21>>21 รูป
โทมัสทำรูปทั้งหมด 25 รูป - 21 รูปดินสอสีและมาร์คเกอร์ผสมสี = <<25-21=4>>4 รูปถ่านหิน.