Join the Meeting Place for Moms!
Talk to other moms, share advice, and have fun!

(minimum 6 characters)

I need help with math ASAP :(

I have a test today and I'm reviewing and I'm at a part that DH and I didn't make it to when he was helping me, and now he's at work.
"Solve each equation or inequality"
and here's the problem: 3|4-3x|-4=8

I can solve something like |2x+4|= whatever, but I'm having issues with the ones set up like the one I'm working on and it isn't explained in the book and I have NO idea where I'm going wrong! There are supposed to be 2 answers in (set notation?) {number,number} format. I think I got one of them, but I'm not sure. Help please?

 
Mrs.BAT

Asked by Mrs.BAT at 11:09 AM on Mar. 14, 2011 in

Level 38 (105,028 Credits)
This question is closed.
Answers (4)
  • 3|4-3x|-4=8
    3|4-3x|=12 <--add 4 to both sides
    4-3x=4 <---Divide by 3 for both sides
    -3x=0 <---Subtract 4 from both sides
    x=0 <---Divide by -3

    If you put 0 into the equation to double check:
    3|4-3x|-4=8
    3|4-3(0)|-4=8
    3|4-0|-4=8
    3(4)-4=8
    12-4=8
    8=8
    laird6372

    Answer by laird6372 at 11:19 AM on Mar. 14, 2011

  • It's been a little bit since I've had to this, but I think you either have to:
    A.) Distribute 1st: 3x4 and 3x-3x
    B.) Take it out of set notation 1st... Which I believe is -4+3x
    Sorry if I'm wrong.
    Tink05215

    Answer by Tink05215 at 11:14 AM on Mar. 14, 2011

  • my brain hurts from just reading this question....goodluck
    knicole0708

    Answer by knicole0708 at 11:22 AM on Mar. 14, 2011

  • THANK YOU!!! I feel so dumb, but my brain really isn't working today (I only slept an hour last night). It's been almost 3 years since I've done this, and I wasn't good at it then lol. You are SUCH a life saver!

    Btw... If I get stuck on something dumb again can I send you a message lol? I feel horrible asking that, but I really don't have anyone to ask right now and I won't be able to before I take this test.
    Mrs.BAT

    Comment by Mrs.BAT (original poster) at 11:23 AM on Mar. 14, 2011

Next question in
Rosetta Stone

Next question overall (General Parenting)
Red Tender Spot on Left Breast

close Join now to connect to
other members!
Connect with Facebook or Sign Up Using Email

Already Joined? LOG IN