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9 December, 22:39

7x-4 (6-x) + 12. if x=6

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Answers (2)
  1. 9 December, 22:49
    0
    7x-4 (6-x) + 12

    Substitute 6 for x.

    7 (6) - 4 (6 - 6) + 12

    Use distributive property (Multiply - 4 by 6 and - 6)

    7 (6) - 24 - 24 + 12

    Multiply 7 by 6

    42 - 24 - 24 + 12

    Subtract 24 from 42

    18 - 24 + 12

    Subtract 24 from 18

    -6 + 12

    Add

    Final Answer: 6
  2. 9 December, 22:52
    0
    We just need to substitute in 6 whether we see an x:

    (7*6) - 4 * (6-6) + 12

    = 42 - 4*0 + 12

    =54
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