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26 November, 10:47

Twice a number increased by 12 is equal to 31 less than three times the number find the number

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  1. 26 November, 14:09
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    Let n be a number

    3n - 31 = 2 (n + 12)

    3n - 31 = 2n + 24

    3n - 2n = 24 + 31

    n = 55
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