Math,Ratio

the ratio of the number of coins Azam had to the number of coins Eddie had was 3:7.Eddie gave 42 coins to Azam and they ended up having the same number of coins.how many coins did each person have at first? pls sh

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  1. orginal:
    number of coins for Azam = 3x
    number of coins for Eddie = 7x

    Eddie gave 42 coins to Azam
    Azam now has 3x + 42
    Eddie now has 7x - 42

    but 7x - 42 = 3x + 42
    4x = 84
    x = 21

    So at first
    Azam had 3(21) or 63
    Eddie had 7(21) = 147

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