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6 December, 13:09

Which expressions are equivalent to 30 - 3y - 9? 3 (17-y)

3 (20-y-3)

17 (3-y)

Or 20 (3-3y) - 9

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Answers (1)
  1. 6 December, 14:24
    0
    3 (20 - y - 3)

    Explanation:

    If you expand it:

    3 · 20 = 30

    3 · - y = - 3y

    3 · - 3 = - 9

    Combine them altogether to get:

    30 - 3y - 9
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