Fred has 63/3 = <<63/3=21>>21 dark blue marbles.

Fred has 63-21 = <<63-21=42>>42 red and green marbles.

Fred has 42-4 = <<42-4=38>>38 red marbles.

# Answer

38
<|im_start|>system
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<|im_start|>user
At least a third of Fred's marbles are dark blue. All of the rest are red, except for 4 that are green. If he has 63 marbles, how many of them are red?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
38
At least a third of Fred's marbles are dark blue. All of the rest are red, except for 4 that are green. If he has 63 marbles, how many of them are red?
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