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My algebra....

I have learned so much this week! :)

I am now solving with parentheses, I am not asking you to do the work
for me as some lady posted-but could someone give me directions?

2m - 3 (m + 3) = -13

I am stumped. I kept getting it wrong, the book says the answer should be 4.

 
Anonymous

Asked by Anonymous at 6:21 PM on Feb. 3, 2011 in

This question is closed.
Answers (4)
  • distribute the -3 (multiply it times both items in the parentheses):
    2m -3m -9 = -13
    add 9 to both sides:
    2m -3m = -4
    Combine the m's (add them together):
    -1m = -4
    divide both sides by -1:
    m=4
    TweenAndTwinMom

    Answer by TweenAndTwinMom at 6:26 PM on Feb. 3, 2011

  • remember that when you have to move the number without the coefficient to the other side that you're having to add it -9+9 = 0
    -13+9= -4 and 2m-3m = -1m so when you get there, divide by the -1 on both sides, which just gives you m=4 ta da!
    hippomom1919

    Answer by hippomom1919 at 6:28 PM on Feb. 3, 2011

  • yeah tweenandtwin's answer makes more sense than mine does lol :D
    hippomom1919

    Answer by hippomom1919 at 6:29 PM on Feb. 3, 2011

  • Both of you were great and right on.
    tootoobusy

    Answer by tootoobusy at 6:34 PM on Feb. 3, 2011

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