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Mathematics 17 Online
OpenStudy (bekkah323):

adding fractions with x's problem below

OpenStudy (bekkah323):

\[\frac{ x+1 }{ (x+3)(x-3) } + \frac{ 4(x-3) }{ (x-3)(x+3)} + \frac{ (x-1)(x-3) }{ (3-x)(x+3) }\]

OpenStudy (jhannybean):

Since we have the same denominator, add up all the numerators.

OpenStudy (bekkah323):

but the last one is different its (3-x) instead of (x-3) so i have a negative 3 and a positive 3

OpenStudy (jhannybean):

Ahh hm.

OpenStudy (dan815):

hi u got same denominator just add em up

OpenStudy (jhannybean):

Think you can multiply by -1 but that's just a hunch.

OpenStudy (jhannybean):

lol dan -_- no....

OpenStudy (souvik):

so take -1 out from the denominator of the rightmost fraction...

OpenStudy (dan815):

oh i seee

OpenStudy (bekkah323):

Yah i know that how i did previous problems, but then wouldn't the negative one effect the (x+3) as well?

OpenStudy (souvik):

no @bekkah323

OpenStudy (jhannybean):

souvik, show me this!!

OpenStudy (dan815):

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