How do I remove an IP block from iptables?

I have been blocking bad IPs using

Code:

iptables -A INPUT -s xx.xxx.xxx.xx -j DROP

I accidentally block a good ip, how do I remove the one ip from iptables.

 

list:
iptables -L -v --line-numbers

delete:
iptables -D name_of_chain number_of_line_with_IP_that_you_want_to_delete

 

I also just found this command to work

iptables -D INPUT -s theipaddress -j DROP