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Mathematics 25 Online
OpenStudy (anonymous):

help with adding and subtracting rational expressions

OpenStudy (lgbasallote):

first find the LCD of your rational expressions...to do that, check this awesome tutorial by an awesome guy from openstudy :DDD http://openstudy.com/study#/updates/4f9f93dae4b01d279f25db37

OpenStudy (anonymous):

um where is the expressions?

OpenStudy (anonymous):

\[((2y+1)\div(3y)+(5y+4)\div(3y)\]

OpenStudy (lgbasallote):

hmm seems you have common denominators...just add the numerators then copy the denominators

OpenStudy (lgbasallote):

simplify after if possible

OpenStudy (anonymous):

so its 7y+5/3y?

OpenStudy (anonymous):

That's what I had at first atleast. but i wasnt suree

OpenStudy (lgbasallote):

yup there ya go

OpenStudy (lgbasallote):

that link to my tutorial will still be helpful for your future lessons so i advice you keep it ;D

OpenStudy (anonymous):

haha it's sooo long though :P

OpenStudy (lgbasallote):

then just look at @zepp comment there...it's a shorter method...but it's the same thing..his is just a shortcut

OpenStudy (anonymous):

Aww thank you. You are awesome. :D

OpenStudy (lgbasallote):

my pleasure <tips hat>

OpenStudy (anonymous):

Could you help me with this next problem? :P

OpenStudy (anonymous):

((-2)/(n+4))-((n^2)/(n^2+6))

OpenStudy (zepp):

?

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