Question
A yellow bag has 3 times as many marbles as a brown bag. Brandon added 4 marbles to the yellow bag and 7 marbles to the brown bag. If there are 2 times as many marbles in the yellow bag as the brown bag, what was the total number of marbles in the two bags before Brandon added the marbles?
3 m

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A yellow bag has 3 times as many marbles as a brown bag. Brandon added 4 marbles to the yellow bag and 7 marbles to the brown bag. If there are 2 times as many marbles in the yellow bag as the brown bag, what was the total number of marbles in the two bags before Brandon added the marbles?