Question
Anna used 57 of her blue stickers and 27 of her black stickers to decorate her diary. In the end, she had an equal number of blue stickers and black stickers left. Given that Anna had a total of 343 blue and black stickers at first, how many black stickers did she use to decorate the diary?
4 m

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Anna used 57 of her blue stickers and 27 of her black stickers to decorate her diary. In the end, she had an equal number of blue stickers and black stickers left. Given that Anna had a total of 343 blue and black stickers at first, how many black stickers did she use to decorate the diary?