Question
Diana and Yoko had an equal number of marbles at first. After Diana gave 6 marbles to Yoko, Yoko had 20 marbles. How many marbles does Diana have in the end?
4 m

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Diana and Yoko had an equal number of marbles at first. After Diana gave 6 marbles to Yoko, Yoko had 20 marbles. How many marbles does Diana have in the end?