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9 September, 23:24

Travis gained 9 pounds during the holidays. He dieted and lost 14 pounds but gained 3 more when he went on vacation. By the end of the year he lost another 7 pounds. How much and in what direction was his net change in weight?

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  1. 9 September, 23:30
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    At the end of the year, Travis had 9 less pounds then what he started with during the holidays, meaning that the direction of his net change in weight is negative.

    Step-by-step explanation:

    We don't know what Travis's weight is to start with, so let's add a variable that will substitute for his weight. It's not too important to know exactly what his weight to start with is, anyway. If you write it out using w as the weight Travis started with during the holidays, you would end up with:

    w + 9 - 14 + 3 - 7

    If you simplify the above equation:

    w - 9

    This means that at the end of the year, Travis will have 9 less pounds than what he started with in the holidays.
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