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6 October, 08:08

Which algebraic expression is equivalent to the expression below? (3x - 3) + 3 A. 3x + 6 B. 3x C. 3x - 6 D. 9x

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Answers (2)
  1. 6 October, 08:19
    0
    b. 3x

    Step-by-step explanation:

    (3x - 3) + 3 = 3x - 3 + 3 = 3x
  2. 6 October, 08:22
    0
    3x

    Step-by-step explanation:

    (3x - 3) + 3 = (3x + - 3) + 3

    use the Associative Property of Addition: (a + b) + c = a + (b + c)

    = 3x + (-3 + 3)

    use Inverse Property of Addition: a + (-a) = (-a) + a = 0

    = 3x + 0

    use Identity Property of Addition: a + 0 = 0 + a = a

    = 3x
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