Question
Adam has 18 marbles.
He puts the marbles into 2 groups.
There are 3 green marbles and some red marbles in each group.
How many red marbles that Adam have in each group?
4 m

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Adam has 18 marbles.
He puts the marbles into 2 groups.
There are 3 green marbles and some red marbles in each group.
How many red marbles that Adam have in each group?