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30 January, 22:35

Four times the sum of some number plus 2 is equal to 8 times the number minus 20. Find the number.

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  1. 30 January, 23:14
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    4 (n + 2) = 8n - 20

    4n + 8 = 8n - 20

    20 + 8 = 8n - 4n

    28 = 4n

    28/4 = n

    7 = n < = = = ur number
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