A fair coin is flipped 7 times.  What is the probability that at least 5 of the flips come up heads?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A fair coin is flipped 7 times.  What is the probability that at least 5 of the flips come up heads?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{29}{128}
A fair coin is flipped 7 times.  What is the probability that at least 5 of the flips come up heads?
train