21 = 3 + 4n + 5n can someone solve this but with showing work please??

Question

21 = 3 + 4n + 5n can someone solve this but with showing work please??

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MichaelMet 3 years 2021-08-13T12:54:26+00:00 1 Answers 16 views 0

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  1. minhkhue
    0
    2021-08-13T12:55:26+00:00
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    21 = 3 + 4n + 5n

    => 21 – 3 = 4n + 5n

    => 18 = 4n + 5n

    => 18 = 9n

    => 18/9 = n

    => 2 = n

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