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

### Instruction:
Brett has 24 more blue marbles than red marbles. He has 5 times as many blue marbles as red marbles. How many red marbles does he have?

### Response:
 ให้ x เป็นจำนวนลูกแก้วสีแดง
5*x=x+24
4*x=24
x=<<6=6>>6