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25 January, 16:05

Devin's DVD case has 3 rows of slots, but 5 slots are broken. If x equals the number of slots in a row explain how the expression 3x - 5 relates to Devin's DVD case

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  1. 25 January, 16:29
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    The total number of unbroken / working slots

    Step-by-step explanation:

    Given that Devin's DVD case has 3 rows of slots, but 5 slots are broken

    Also given that the number of slots in a row is x

    1 row has x slots

    3 rows has y slots

    on cross multiplication we get y = 3x

    ie there are a total of 3x slots in the 3 rows

    Given that out of these 3x slots 5. of the slots are broken

    Therefore the total number of working slots = total number of slots - number of slots which are broken

    total number of working slots are = 3x - 5

    Therefore the given expression is the number of working / good slots
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