Question
Risa had thrice as many erasers as coins at first. She removed 6 erasers and 3 coins each time. In the end, there were 12 erasers and 1 coin left. How many erasers and coins did Risa have at first?
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Risa had thrice as many erasers as coins at first. She removed 6 erasers and 3 coins each time. In the end, there were 12 erasers and 1 coin left. How many erasers and coins did Risa have at first?