Question
Mrs Rachel had some mochi balls. She bought another 30 mochi balls. She gave 63 mochi balls each to her 7 children. In the end, she had 292 mochi balls left. How many mochi balls did Mrs Rachel have at first?
4 m

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Mrs Rachel had some mochi balls. She bought another 30 mochi balls. She gave 63 mochi balls each to her 7 children. In the end, she had 292 mochi balls left. How many mochi balls did Mrs Rachel have at first?