Let x be the number of pairs of shoes that Becky owns.

Since 13 pairs is 5 less than twice as many pairs as Becky owns, then the relationship is 2x-5=13.

Adding 5 to each side of the equation, we get 2x=18.

Solving for x, we get x=<<9=9>>9.

Since Bobby has 3 times as many pairs of shoes as Becky has, then Becky has 3*9=<<3*9=27>>27 pairs of shoes.

# Answer

27
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Bonny just bought her 13th pair of shoes, which is 5 less than twice as many pairs of shoes as Becky owns.  Bobby has 3 times as many pairs of shoes as Becky has.  How many shoes does Bobby have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
27
Bonny just bought her 13th pair of shoes, which is 5 less than twice as many pairs of shoes as Becky owns.  Bobby has 3 times as many pairs of shoes as Becky has.  How many shoes does Bobby have?
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