anonymous
  • anonymous
Help!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1/3x+ 1/3 (2x-15) =3 1/2
Jhannybean
  • Jhannybean
That's much better.
anonymous
  • anonymous
@Emeyluv99

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anonymous
  • anonymous
now where were we.
anonymous
  • anonymous
$$(3(2x-15) 1 + (3(2x-15)) (3x) \frac{1}{(3(2x-15))} = (3(2x-15)) (3x) \frac{7}{2}$$
anonymous
  • anonymous
At the second denominator.
anonymous
  • anonymous
yes, so when we multiply by the second denominator, we get ^^ that mess up there
anonymous
  • anonymous
so lets simplify the second equation when the (3(2x-15)) cancels itself out
anonymous
  • anonymous
$$(3(2x-15)) 1 + (3x) 1 = (3(2x-15)) (3x) \frac{7}{2}$$
Jhannybean
  • Jhannybean
Original question: \[\sf \frac{1}{3x}+\frac{1}{3(2x-15)}=\frac{7}{2}\]
anonymous
  • anonymous
@Emeyluv99
anonymous
  • anonymous
oh my, it does
anonymous
  • anonymous
it'll be worth it in the end! lets finish off the last denominator! 2!
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
$$2(3(2x−15))1+2(3x)1=2(3(2x−15))(3x) \frac{7}{2}$$
anonymous
  • anonymous
Nice anime pic x'3
anonymous
  • anonymous
that pic is awesome by the way
anonymous
  • anonymous
Mys is loves drawing like you and ok.
anonymous
  • anonymous
my sis*
anonymous
  • anonymous
so simplify the problem out: 6(2x-15) + 6x = 9x(3x-15)
anonymous
  • anonymous
Wait, I thought x's were out?
anonymous
  • anonymous
no not yet, because we had to multiply by the denominators and the denominators had x's in them
anonymous
  • anonymous
its our job now to get rid of them.
anonymous
  • anonymous
and its quite easy too, no calculator required! watch!
anonymous
  • anonymous
6(2x-15) + 6x = 9x(2x-15) 6(2x-15) - 9x(2x-15) = -6x <- I just switched the places of 9x(2x-15) and 6x, because now i can use the ax+bx = (a+b) x rule.
anonymous
  • anonymous
Following so far.
anonymous
  • anonymous
Can we eliminate x's now?
anonymous
  • anonymous
so that would give you (2x-15)(6-9x) = -6x
anonymous
  • anonymous
to basically, what we have now on the left side is a factored quadratic.
anonymous
  • anonymous
To baically? What?
anonymous
  • anonymous
sorry, SO, we have a factored quadratic on the left. which equates to -6x.
anonymous
  • anonymous
K.
anonymous
  • anonymous
what you have to do now is expand the quadratic on the left which will give you $$147x-18x^2-90=-6x$$
anonymous
  • anonymous
then you get rid of -6x by adding 6x to both sides: $$147x-12x^2-90=0$$
anonymous
  • anonymous
then you factor it again. ...
anonymous
  • anonymous
Session expired. :( It's OK though, you have some physics right? :)
anonymous
  • anonymous
ugh hang on, we mustve done somehting wrong... im getting radicals
anonymous
  • anonymous
ill get back to you later, i have some homework to do... is that ok?
anonymous
  • anonymous
It's fine. I could try to help if you want.
anonymous
  • anonymous
im writing a lab up so its fine... thanks tho!

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