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Mathematics 20 Online
OpenStudy (anonymous):

Add or subtract as indicated

OpenStudy (anonymous):

\[\frac{ 5x }{ x+1 } + \frac{ 6 }{ x-1 } - \frac{ 10 }{ x^2-1 }\] ...so many fractions!

OpenStudy (anonymous):

Woah....

OpenStudy (anonymous):

I think it might have to start off with a common denominator e.e

OpenStudy (anonymous):

You shoule be able to just combine like terms. yielding: 7x - 14x = -7x. 30xy - (29xy) = 59xy.28y - (25y) = -3y. for a final answer of.7x + 59xy - 3y

OpenStudy (mathlegend):

You are right about common denominators @AngelCriner

OpenStudy (anonymous):

I am so sorry but what ? >.< @trebillings I'm not following... and @MathLegend I'm not exactly sure how to get that though

OpenStudy (mathlegend):

\[(x-1)\frac{ 5x }{ x+1 }+(x+1)\frac{ 6 }{ x-1 }-\frac{ 10 }{ (x+1)(x-1) }\]

OpenStudy (mathlegend):

We need to multiply the first two fractions by what they don't have in the denominator to get them to be common. Do you follow so far? @AngelCriner

OpenStudy (anonymous):

Yes

OpenStudy (mathlegend):

Can you multiply the first two fractions and show me what you get?

OpenStudy (anonymous):

\[\frac{ 5x^2-5x }{ x^-1 } + \frac{ 6x+6 }{ x+1 }\] There's a most definite chance that I am terribly wrong

OpenStudy (mathlegend):

\[\frac{ 5x ^{2}-5x }{ (x+1)(x-1) }+\frac{ 6x+6 }{ (x+1)(x-1) }-\frac{ 10 }{ (x+1)(x-1) }\]

OpenStudy (mathlegend):

Make sense? If so, you know what you now can do.

OpenStudy (mathlegend):

What do you get as a final answer @AngelCriner ?

OpenStudy (anonymous):

Don't all of the denominators cancel each other out?

OpenStudy (anonymous):

I got \[\frac{ 5x-4 }{ x-1 }\] though

OpenStudy (anonymous):

@AngelCriner I love how you always try and you give an answer to what you think it might be. A lot on here does not do that and just wants the answer. You have made a fan.

OpenStudy (anonymous):

Awe thank you @MDoodler I'd just rather try to understand what I can since math's already too complex for me lol I'd rather attempt the problem and see where I mess up at so I can try again in the future.

OpenStudy (mathlegend):

Sorry, yes but I didn't get a denominator... I just got 5x-4 @AngelCriner

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