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13 November, 11:51

How to solve 4+|7-m|=5

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Answers (1)
  1. 13 November, 11:55
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    When

    |a|=b

    assume

    a=b and - a=b

    so

    4+|7-m|=5

    minus 4 from both sides

    |7-m|=1

    assume

    7-m=1 and

    - (7-m) = 1

    7-m=1

    minus 7 both sidees

    -m=-6

    times - 1 both sides

    m=6

    - (7-m) = 1

    distribute

    -7+m=1

    add 7 to both sides

    m=8

    m=6 and 8
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