Math question
 

-25/27x + 8/9 = 1/3

How do I determine what x is?

You express the entire fraction with a common denominator (27) and then you merge the 2 fractions on the left hand side to one, then cross multiply to isolate x and find the value.
WG

Heres one for ya!


http://mornwud.readyhosting.com/Girls=evil.jpg

I had to take Algebra twice sorry no help here but my wife is a wiz let me get her.

PS: The answer is 5/3...
WG

taking couple of crown royal shots....and ill re read this thread and post the answer

How about 3/5

I am helping someone with something I was no good at 36 years ago

lol i WAS an algebra wiz.
but that was over 12 years ago now. :)

If the x is in the denominator, then its 5/3. If its the numerator, 3/5.
WG

Can you explain this one in long math? I know the answer, but I will be damned if I can discuss why.

Well, the online test is saying it is 3/5

You sure the x is in the denominator?
WG

:1orglaugh

fucking nerds

-25/27x + 8/9 = 1/3 is what I was given

Is it

(-25/27) * x + 8/9 = 1/3

OR

[-25 / (27x)] + 8/9 = 1/3

?!?

Is the X in the numerator or denominator though? The way you wrote it puts it in the denominator.
WG

I believe the latter

Well, I have an "expert" here and he is coming up with 1 2/3 which is the same as your 5/3 . . . so maybe they are wrong

Its either this

http://www.google.com/search?q=(1%2F...GGL_en___PK213

or

http://www.google.com/search?q=(3%2F...GGL_en___PK213

depending on the position of 'x' .. whether it was with numerator or denominator.

The answer is either 5/3 or 3/5 depending on where x is. If its the numerator, then 3/5, if the denominator, its 5/3. Figure out where x is and you'll have the answer.
WG

Err, one part was false.


If 'x' is denominator, its ..
http://www.google.com/search?hl=en&s...29&btnG=Search

If numerator, its ..
http://www.google.com/search?q=(1%2F...GGL_en___PK213



So, WG is right and first to solve :thumbsup

I got 5/3 in two different ways:

27x(-25/27x) + 27x(8/9) = 27x(1/3)
-25 + 3x(8) = 9x
-25 +24x = 9x
-25 = -15x
-25/-15 = x
5/3 = x

-25/27x = 1/3 - 8/9
-25/27x = 3/9 - 8/9
-25/27x = -5/9
-25 = 27x(-5/9)
-25 = -135x/9
-225 = -135x
-225/-135 = x
5/3 = x

:thumbsup

-25/27x + 8/9 = 1/3


-25/27x + .888 - .888 = .333 -.888

-25/27x = .333 -.888

-25 / 27x = -.555

-25 / 27x * 27x = -.555 *27x

-25 = -.555 * 27x

-25 + .555 = 27x

-24.445 = 27x

-24.445 = 27x/27

-24.445/27 = x

-0.9 =x

oh snap you guys solved it

im really wrong?

shit

Okay, my brain just splattered across the room . . I need to go clean it up.

Thanks guys

Your error is here:

-25 / 27x * 27x = -.555 *27x

-25 = -.555 * 27x

-25 + .555 = 27x

You didn't calculate the product of -.555 and 27x when you multiplied both sides by 27x.

That would have been -25 = -14.985x.

You would have ended up with @5/3. By rounding the numbers you were off by .015.

whats the detonator?

You people have too much fucking time on your hands to be fucking around with that bullshit!

There are more important things that need to be done. :2 cents:

you guys are pathetic, this is 3rd grade math for fucks sake... a retarded 10 year old kid could solve this with his eyes closed...

is it -25/27x or (-25/27)x?

:1orglaugh:1orglaugh

Well, as it was described to me orally (I did not get to see the question) I have come to the conclusion it is the latter.

uh huh huh huh huh, he said "orally" :1orglaugh

I 2nd that, although I'd say it would need a 12-13 year old non-retarded child IMHO.

It is 8th grade math, and it has been a VERY long time since I was in the 8th grade.

LOL, it was just a simply equation for kids. Why do you think someone need "too much fucking time" to calculate it? Less than 2 minutes is not too much time I believe :2 cents:

-25/27x + 8/9 = 1/3

is a same as

(-25/27) * x + 8/9 = 1/3

and it is a same as

-25x / 27x + 8/9 = 1/3

and of course it's not [-25 / (27x)] + 8/9 = 1/3 :winkwink:

P.S. The elementary school rules :winkwink:

Another one :1orglaugh

Is there ANY DIFFERENCE between -25/27x and (-25/27)x ??? :helpme

is it five???????? i have no idea i got a poor mathematics skill

lol... is it a joke?
i used to do those in high school

Wrong answer, Sir.

Let's test your X. Here we go:

-25/27x + 8/9 = 1/3

so

-25/27 * 5/3 + 8/9 must be 1/3 = 0,3(3) right?

but -25/27 * 5/3 + 8/9 is -0.654320987654321

Thus your solution is wrong. The right answer is 3/5.

See:

-25/27x + 8/9 = 1/3
-25/27x + 24/27 = 9/27
-25x = 9 - 24
25/27x = 15/27
x = 15/25
x = 3/5

Now let's test my number with the original equation:

-25/27 * 3/5 + 8/9 = 0.3(3) which is 1/3

P.S. In Russia we were learning even more complicated square equations (you know ax^2 + bx + c = 0 where a <> 0) in the 4th grade (10 years old), so were learning the equations like solved above when we were even younger.

the denominator, its 5/3. Figure out where x is and you'll have the answer.
WG

-25/27x + 8/9 = 1/3 - can't you "find out" where is x there? :)

The answer is 5/3

-25/27x + 8/9 = 1/3

-25/27(5/3) + 8/9 = 1/3 Brackets are important here

-25/45 + 8/9 = 1/3

-25/45 + 40/45 = 1/3

15/45 = 1/3

1/3 = 1/3 TRUE

Call an engineer :1orglaugh

Are you sure??? :1orglaugh:1orglaugh:1orglaugh

My wooden Russian brain is telling me this:
-25/27*(5/3) + 8/9 = -25/27 * 5/3 + 8/9 = -0.65432098765 which is NOT equal to 1/3.

Where did you learn the math if you don't know what -25/27*(5/3) is ABSOLUTELY EQUAL to -25/27 * 5/3?

Wanna check? Go to http://instacalc.com/ and copy-paste both formulas there. I mean these:
1) -25/27*(5/3) + 8/9
2) -25/27 * 5/3 + 8/9

You may believe me or not, but you'll get THE SAME result which is -0.65432098765. As you can see, -0.65432098765 IS NOT EQUAL to 1/3.

Now copy-paste there the right one:
-25/27 * 3/5 + 8/9

...and you'll get the correct result 0.3(3) which is 1/3.

Ah yes... you may also use the brackets if it really does matter for you, e.g.:
-25/27 * (3/5) + 8/9
-25/27 * (3/5) + (8/9)
(-25/27) * (3/5) + (8/9)
(-25/27) * (3/5) + (8/9)
(-(25)/27) * (3/5) + (8/9)
etc... :winkwink:

Replace x with any random number > 1 and see for yourself :thumbsup