Question
Eva put 221 eggs on some big trays and small trays. She put 7 eggs on each big tray and 6 eggs on each small tray. She used the same number of big trays and small trays. How many trays did Eva use altogether?
4 m

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Eva put 221 eggs on some big trays and small trays. She put 7 eggs on each big tray and 6 eggs on each small tray. She used the same number of big trays and small trays. How many trays did Eva use altogether?