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25 November, 09:20

What is the fraction for 4 (5n-7) = 10n+2

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  1. 25 November, 09:32
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    4 (5n - 7) = 10n + 2

    4 (5n) - 4 (7) = 10n + 2

    20n - 28 = 10n + 2

    - 10n - 10n

    10n - 28 = 2

    + 28 + 28

    10n = 30

    10 10

    n = 3
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