Kate bought 7 packs × 18 balls/pack = <<7*18=126>>126 red bouncy balls.

She also bought 6 packs × 18 balls/pack = <<6*18=108>>108 yellow bouncy balls.

Kate bought 126 balls - 108 balls= <<126-108=18>>18 more red bouncy balls than yellow bouncy balls.

# Answer

18
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Kate bought 7 packs of red bouncy balls and 6 packs of yellow bouncy balls. Each pack contained 18 bouncy balls. How many more red bouncy balls than yellow bouncy balls did Kate buy?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
18
Kate bought 7 packs of red bouncy balls and 6 packs of yellow bouncy balls. Each pack contained 18 bouncy balls. How many more red bouncy balls than yellow bouncy balls did Kate buy?
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