Question
Jean had 42 more marbles than Gem at first. Gem gave 12 of her marbles to Jean. Jean now has 4 times as many marbles as Gem. How many marbles did Gem have at first?
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Jean had 42 more marbles than Gem at first. Gem gave 12 of her marbles to Jean. Jean now has 4 times as many marbles as Gem. How many marbles did Gem have at first?