Question
Oscar had twice as many marbles as Erika. They had 30 marbles altogether. Oscar gave 43 marbles to Erika. How many marbles did Erika have in the end?
4 m

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Oscar had twice as many marbles as Erika. They had 30 marbles altogether. Oscar gave 43 marbles to Erika. How many marbles did Erika have in the end?