Solve: |2n - 3| = 5
A. {-1, 4}
B. {1, 4}
C. {-1, 1}
D. {1, -4}

Question

Solve: |2n - 3| = 5
	A.	{-1, 4}
	B.	{1, 4}
	C.	{-1, 1}
	D.	{1, -4}

anonymous · Answer

|2n - 3| = 5
2n+3=5
2n=2
n=1
so C.{-1, 1}

anonymous · Answer

Are you even trying on these or am I just doing your flvs work?

flywalker · Answer

|2n-3|=5
2n-3=+5 or  2n-3=-5
if 2n-3=5
2n=8
n=4


if 2n-3=-5
2n=-2
n=-1

so A!!!

anonymous · Answer

The question is asking what makes the statement true.......l

flywalker · Answer

sorry i said solved and (you know in every country they use diferent simbols) 
so i suposed {}==()

flywalker · Answer

?

anonymous · Answer

Wait I am right you stop confusing me!

flywalker · Answer

xaxaxa sorry but my solution is the right one100%  

|x|= +-x

anonymous · Answer

|2(4)-3|=5
8+3=5
11=5 
Does 11 equal 5? I don't think so making me correct.

flywalker · Answer

in the same logik if you keep 1  you'll find  2=5!!
(look i can't really speak very good english but the rull is |x|=+-x)

anonymous · Answer

|2(-1)-3|=5
2+3=5
5=5

|2(1)-3|=5
2+3=5
5=5
It's in an absolute value so negatives become positives.

flywalker · Answer

that's right but not like that!!
you can't have |2(1)-3|=5
                      2+3=5
                      you can change the sign inside but not like this
                      example:
                     |2x-3|=3
                     |-(-2x+3)|=3
                     |-2x+3|=3

anonymous · Answer

I am not going to argue as this is probably pre-algebra and I'm sure my answer was correct.

flywalker · Answer

my friend we are not arguing!!we are trying to find the sollution!!we are cooperating!! take a look http://en.wikipedia.org/wiki/Absolute_value

flywalker · Answer

if you don't trust wiki google for absolute value