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Mathematics 7 Online
alones (alones):

@calculusxy

alones (alones):

O..m.g it won't post D:

OpenStudy (calculusxy):

can you write out the problem?

alones (alones):

I am, and brb let me refresh

alones (alones):

Okay Perform the indicated operation.\[\frac{ y }{ y-5 } + \frac{ 5 }{ 5-y}\]

OpenStudy (calculusxy):

what's the common denominator?

alones (alones):

5

OpenStudy (calculusxy):

not really. look at the denominators carefully.

OpenStudy (calculusxy):

you have the denominators of \(y-5\) and \(5 - y\). since they don't share anything with each other (like one is not a multiple of the other), the common denominator would be \((y-5)(5-y)\).

alones (alones):

Ooooh

OpenStudy (math&ing001):

Or just multiply by -1 ;]

alones (alones):

;]

Nnesha (nnesha):

you can make it easy that's right (y-5) isn't same as (5-y) but you can take out the negative one \[(5-y)= -(-5+y)\]

Nnesha (nnesha):

\[\frac{ y }{ y-5 } \color{Red}{+}\frac{5}{-(y-5)} = \frac{ y }{ y-5 }\color{red}{ -}\frac{ 5 }{ y-5 }\] (-5+y) is same as (y-5)

alones (alones):

OOoooh so now it's subtracting? ;3

OpenStudy (calculusxy):

so since the common denominator is \((y-5)(5-y)\). what you need to do is make sure to have each of the fractions have that common denominator. \[\frac{y}{y-5} \rightarrow \frac{y\color{red}{(5-y)}}{(y-5)\color{red}{(5-y)}}\]

OpenStudy (calculusxy):

so i think @Nnesha got this. i don't want to interfere, or else u r going to get confused

alones (alones):

Omg i think i get it now so since the denominator is subtracted and the to we subtract too so it would look like this? \[\frac{ y-5 }{ y-5 }\]

OpenStudy (math&ing001):

Yep !

Nnesha (nnesha):

oh no no no cary one please. that's another way to solve this question.

OpenStudy (math&ing001):

Then simplify it.

alones (alones):

o.mg. i mean \[\frac{ y-5 }{ 5-y }\]

Nnesha (nnesha):

on*

OpenStudy (math&ing001):

First one was correct..

OpenStudy (calculusxy):

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