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Algebra help

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Algebra help

Postby mtryanks12 » Thu May 05, 2005 5:24 pm

I don't know if anyone here is good at algebra, but I'm stuck on my algebra homework. ANyone know the answer to this problem, which I drew a picture of?? Note that the little number on the far left is a 3.

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Postby PackerAttack84 » Thu May 05, 2005 5:30 pm

3X+1/3=6

3*-2 1/3=-7+1=-6 -6/3=-2

X=-2 1/3

The problem is suppose to be 3X+1 divided by 3 = -2, right?

That was easy, my 8th grade algebra is much harder.
Last edited by PackerAttack84 on Thu May 05, 2005 5:33 pm, edited 2 times in total.
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Postby RayVins » Thu May 05, 2005 5:30 pm

3x+1=-8
3x=-9
x= -3... i think
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Postby mtryanks12 » Thu May 05, 2005 5:34 pm

PackerAttack84 wrote:3X+1/3=6

3*-2 1/3=-7+1=-6 -6/3=-2

X=-2 1/3

That was easy, my 8th grade algebra is much harder.


Just so you know, that was my answer, this problme came up on a test also, and it was wrong.

and I am also taking 8th grade algebra 1.
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Postby RayVins » Thu May 05, 2005 5:41 pm

what you have to do to start is cube both sides... then solve from there...

3x+1=-8
3x=-9
x= -3
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Postby J2thez929 » Thu May 05, 2005 5:46 pm

RayVins wrote:what you have to do to start is cube both sides... then solve from there...

3x+1=-8
3x=-9
x= -3


I'm with RayVins on this one. Thats how I was tought to do that problem. But then again, I haven't taken a high school or middle school algerbra for like 6 years
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Postby mtryanks12 » Thu May 05, 2005 5:51 pm

see, I wasn't sure to cube it or square it. thanks for your help guys!
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Postby PackerAttack84 » Thu May 05, 2005 5:55 pm

mtryanks12 wrote:
PackerAttack84 wrote:3X+1/3=6

3*-2 1/3=-7+1=-6 -6/3=-2

X=-2 1/3

That was easy, my 8th grade algebra is much harder.


Just so you know, that was my answer, this problme came up on a test also, and it was wrong.

and I am also taking 8th grade algebra 1.


Hmm...I don't know then, we are working on problems like these right now, so I can't really help you:

(-3x^4y^7)^6(24x^2y) Tricky stuff. Don't know if there is an answer to that problem, just one I came up with right now.
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Postby mtryanks12 » Thu May 05, 2005 5:58 pm

pack, wnhat you did wrong is made the -2 a positive 8 when you cubed it, but it's really a neagtive 8.
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Postby TaturCity34 » Thu May 05, 2005 6:04 pm

RayVins is right for sure.
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