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25 September, 22:26

Solve for u. 3 (3u-5) = 39. Simplify your answer as much as possible.

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Answers (2)
  1. 26 September, 01:45
    0
    Step-by-step explanation:

    3 (3u-5) = 39

    9u - 15 = 39

    9u = 15 + 39

    9u = 54

    divide both by 9

    u = 54/9

    u = 6
  2. 26 September, 02:00
    0
    3 (3u-5) = 39

    Mutiply the bracket by 3

    (3) (3u) (3) (-5) = 39

    9u-15=39

    Move - 15 to the other side

    Sign changes from - 15 to + 15

    9u-15+15 = 39+15

    9u = 54

    Divide by 9

    9u/9 = 54/9

    Cross out 9 and 9, divide by 9 and then becomes u.

    u = 6

    Answer: u = 6
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