Question
Linda had thrice as many erasers as marbles at first. She removed 6 erasers and 3 marbles each time. In the end, there were 18 erasers and 1 marble left. How many erasers and marbles did Linda have at first?
4 m

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Linda had thrice as many erasers as marbles at first. She removed 6 erasers and 3 marbles each time. In the end, there were 18 erasers and 1 marble left. How many erasers and marbles did Linda have at first?