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30 July, 22:12

Simplify - (-2a + 13) + (-9a - 2) - (-7a - 3).

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Answers (2)
  1. 30 July, 22:21
    0
    - (-2a+13) + (-9a-2) - (-7a-3)

    2a-13-9a-2+7a+3

    2a-9a+7a-13-2+3

    -7a+7a-15+3

    =-12
  2. 30 July, 22:37
    0
    - (-2a+13) + (-9-2) - (-7a-3)

    - (-2a+13) - 9a-2 - (-7a-3)

    Distribute the negative sign

    - (-2a+13) - 9a-2+-1 (-7a-3)

    - (-2a+13) + - 9a+-2+-1 (-7a) + (-1) (-3)

    - (-2a+13) + - 9a+-2+7a+3

    Distribute

    2a+-13+-9a+-2+7a+3

    Combine like terms

    2a+-13+-9a+-2+7a+3

    (2a+-9a+7a) + (-13+-2+3)

    =-12
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