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x > 6 or x < -1 -1 < x < 6 x > 6 and x < -1
You just solved your own problem.
? lol those are the multiple choice :D @Brenar
Ah, makes much more sense. First off, since this is an absolute value inequality you'll have to split it into two inequalities as such: \[-7>2x-5>7\] You have an idea of where to begin?
Do you understand how I set up the inequality?
? not really
@Brenar this is wrong, a number cant be greater than 7 and less than -7 at the same time...
x>6 or x<-1
This is how we do these |2x-5|>7 so 2x-5>7 2x-5<-7 solve these x>6 or x<-1
ie |a-b|>c <===> a-b>c or a-b<-c
−7>2x−5>7 ^^^ this makes no sense.
that implies, by transitivity, that 7<-7
you are thinking of |a-b|
l2x-5l>7 +5 +5 _____________ 2x > 12 then divide by 2 and you get x>6
nope, regular algebra does not work on absolute values.
|2x|+5 != |2x+5|
or simply plun in -3 to see it is true:)
yeah but i use that for the second solution
we showed both solutions, and what you typed is not correct
l2x-5l>7 +5 +5 ^^^is not right
I don't need a website to tell me that |x|+5 is not the same as |x+5|
I know its not:)
it would be right if you wrote 2x-5>7 +5 +5
but not with the | |
yes with the absolute value sign
then |x|+5 = |x+5|
and so |-3|+5 = 8 = 2 = |-3+5|
what is |-3+5|? what is |-3|+5?
you see now?
and how much math experience do you have?
im about to graduate
with honors with a math degree:)
you don't have to trust me, show me where you read it and ill show you how you read it wrong.
take a calculator and repeat the action. also check mathway.com its a calculator.
proud of you. i just logged on today. doesnt matter to me
you asked? maybe grow up....im trying to help because you are telling someone how to do something wrong.
answer these questions and you should be able to understand why what is |-3+5|? what is |-3|+5?
hahaha says the person with a name they cant even spell correctly. certaintly not graduating with an english major
your name is cristina17?
yes captain O
i know...it is
thats what i said
lol omg what is |-3+5|? what is |-3|+5? now ARE THEY THE SAME???????????????????????
think for yourself....don't run to the website:)
p.s. solving for x in |x|+5 = |x+5| is not the same thing as saying |x|+5 = |x+5| for all x.....
that statement is true if and only if x is 3
ok i got it now. use the multiple choice answers and work backwards l2(7)-5l>7...aka 9>7 l2(-2)-5l>7...aka 9>7
so the answer x > 6 and x < -1 is correct
that is what i had said earlier...i just lacked the explanation