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4 February, 13:07

10 (7k+9p+3) I don't understand

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  1. 4 February, 13:29
    0
    4=0

    Step-by-step explanation:

    Simplifying

    (-9p + 7) + - 1 (-9p + 3) = 0

    Reorder the terms:

    (7 + - 9p) + - 1 (-9p + 3) = 0

    Remove parenthesis around (7 + - 9p)

    7 + - 9p + - 1 (-9p + 3) = 0

    Reorder the terms:

    7 + - 9p + - 1 (3 + - 9p) = 0

    7 + - 9p + (3 * - 1 + - 9p * - 1) = 0

    7 + - 9p + (-3 + 9p) = 0

    Reorder the terms:

    7 + - 3 + - 9p + 9p = 0

    Combine like terms: 7 + - 3 = 4

    4 + - 9p + 9p = 0

    Combine like terms: - 9p + 9p = 0

    4 + 0 = 0

    4 = 0

    Solving

    4 = 0
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