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19 November, 11:57

If 7 times a number is decreased by 33 the result is 15 less than 10 times number. Find the number

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  1. 19 November, 14:01
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    First we set up the equation:

    7n-33=10n-15

    And then we subtract the common factors:

    10n-7n

    -15+33

    3n = 18

    Then we divide:

    18/3

    n=6
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