Mathematics, 20.08.2019 18:00 218219

Dally and marta had the same number of postcards. after sally sold 18 of her postcards, marta had 4 times as many postcards as sally. how many postcards did each girl have to begin with.

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Dally and marta had the same number of postcards. after sally sold 18 of her postcards, marta had 4...

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