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28 November, 18:42

How do I make 4 (x+3) = 3 (3x-1) into a simpler form without parentheses. Then substitute 3 for x.

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Answers (2)
  1. 28 November, 20:28
    0
    x=3

    Step-by-step explanation:

    1) Expand.

    4x+12=9x-34x+12=9x-3

    2) Subtract 4x4x from both sides.

    12=9x-3-4x12=9x-3-4x

    3) Simplify 9x-3-4x9x-3-4x to 5x-35x-3.

    12=5x-312=5x-3

    4) Add 33 to both sides.

    12+3=5x12+3=5x

    5) Simplify 12+312+3 to 1515.

    15=5x15=5x

    6) Divide both sides by 55.

    /frac{15}{5}=x

    5

    )



    15

    = x

    7) Simplify / frac{15}{5}

    5



    15

    to 33.

    3=x3=x

    8) Switch sides.

    x=3
  2. 28 November, 20:31
    0
    4x+12=9x-3

    12+12=27-3

    24=24
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