Question
Cathy used 57 of her grey stickers and 37 of her black stickers to decorate her diary. In the end, she had an equal number of grey stickers and black stickers left. Given that Cathy had a total of 252 grey and black stickers at first, how many black stickers did she use to decorate the diary?
4 m

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Cathy used 57 of her grey stickers and 37 of her black stickers to decorate her diary. In the end, she had an equal number of grey stickers and black stickers left. Given that Cathy had a total of 252 grey and black stickers at first, how many black stickers did she use to decorate the diary?