Question
Esther had 78 more buttons than Opal at first. Opal gave 15 of her buttons to Esther. Esther now has 5 times as many buttons as Opal. How many buttons did Opal have at first?
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Esther had 78 more buttons than Opal at first. Opal gave 15 of her buttons to Esther. Esther now has 5 times as many buttons as Opal. How many buttons did Opal have at first?