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28 June, 07:06

5 times the difference of a number and 20 is the same as half the sum of 4 more than 4 times a number

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  1. 28 June, 07:27
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    5 (n - 20) = 1/2 (4n + 4)

    5n - 100 = 2n + 2

    5n - 2n = 2 + 100

    3n = 102

    n = 102/3

    n = 34 < = = ur number
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