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27 September, 12:53

How to solve y in - (y+9) = 10

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  1. 27 September, 15:48
    0
    Step-by-step explanation:

    - (y+9) = 10

    Multiply through by - 1 gives us

    y+9 = - 10

    Subtract 9 from both sides

    y = - 19

    That's your answer.

    If you work it through it satisfies the equation.

    That is:

    - (-19 + 9) = 10

    - (-10) = 10

    10 = 10

    Boo ya!
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