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31 January, 16:43

How do you solve - 5=7+3r

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Answers (2)
  1. 31 January, 17:01
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    - 5 = 7 + 3r Original problem.

    7 + 3r = - 5 Switch around the problem.

    3r = - 12 Subtract 7 from each side.

    r = - 4 Divide each side by 3.

    Answer: r = - 4
  2. 31 January, 18:34
    0
    -5 = 7 + 3r

    -5 + (-7) = 7 + (-7) + 3r

    -12 = 3r

    -12/3 = 3r/3

    -4 = r
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