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30 September, 09:34

1) - 21 + a = 7 (6a - 3)

2) 2 + 5v = - v + 2 (1 + 7v)

3) 3 (1 - 2x) = 7 - 5x

4) 29 - n = - 4 (n - 2)

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Answers (1)
  1. 30 September, 10:47
    0
    1) a=0

    2) v=0

    3) x=-4

    4) n=-7
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