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madisonmaruhnich94

Solve the equation. 78 = -2 (m+3) + m

  • one year ago
  • one year ago

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  1. dfresenius
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    ok distribute the -2 to the m + 3

    • one year ago
  2. Nameless
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    first distribute the -2 so 78 = -2m + 6 + m. then combine like terms. so 78 = m + 6. then isolate the variableby subtracting 6 from both sides, thus m = 72

    • one year ago
  3. madisonmaruhnich94
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    wouldnt it be -72?

    • one year ago
  4. dfresenius
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    you would get 78 = -2m - 6 + m

    • one year ago
  5. dfresenius
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    -2m + m = -m

    • one year ago
  6. Yahoo!
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    -39 = 2m + 3 -42 = 2m m = -21

    • one year ago
  7. madisonmaruhnich94
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    A. –28 B. –42 C. –72 D. –84

    • one year ago
  8. dfresenius
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    78 = -m - 6

    • one year ago
  9. dfresenius
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    72=-m

    • one year ago
  10. dfresenius
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    m= - 72

    • one year ago
  11. dfresenius
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    -72 is the right answer, they must have read your question wrong

    • one year ago
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