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26 March, 07:40

Benjamin solved the following equation: 4x - 2x + 8 = 6 (x + 4) Step Work Justification 1 4x - 2x + 8 = 6x + 24 Combine like terms 2 2x + 8 = 6x + 24 Combine like terms 3 - 4x + 8 = 24 Subtraction property of equality 4 - 4x = 16 Subtraction property of equality 5 x = - 4 Division property of equality Which step has an incorrect justification?

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  1. 26 March, 07:42
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    For this case we have the following expression:

    4x - 2x + 8 = 6 (x + 4)

    The first step is:

    4x - 2x + 8 = 6x + 24

    The first step is, correct.

    However, the justification "Combine like terms" is NOT correct.

    The correct justification is:

    Distributive property of multiplication.

    Answer:

    A step that has an incorrect justification is:

    Step 1
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