There are 5-1=<<5-1=4>>4 more lions each month.

There will be 4*12=<<4*12=48>>48 more lions after 1 year.

There were 148-48=<<148-48=100>>100 lions in Londolozi at first.

# Answer

100
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are some lions in Londolozi at first. Lion cubs are born at the rate of 5 per month and lions die at the rate of 1 per month. If there are 148 lions in Londolozi after 1 year, how many lions were there in Londolozi at first?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
100
There are some lions in Londolozi at first. Lion cubs are born at the rate of 5 per month and lions die at the rate of 1 per month. If there are 148 lions in Londolozi after 1 year, how many lions were there in Londolozi at first?
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