Rational Equations: need videos to learn how to solve (x+4)/(x+2) = (x-4)/(x+4)

[Zach]

Anyone know a video on were I can view how something like this is solved

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Solve the following equation, and check your solution.

. . . . .\(\displaystyle \dfrac{x\, +\, 4}{x\, +\, 2}\, =\, \dfrac{x\, -\, 4}{x\, +\, 4}\)

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Not the same question (obviously) just a reference so I can succeed.

I've done other rational equations but this one is different than the others.. I think? I end up with numbers on each side of the equation that I can factor, so I factor them and it gives me 4 answers, but the answer key says it's supposed to be a fraction. So I am ****ing something up.

 

[ksdhart2]

We'd be happy to check your work and help you figure out where you might have gone wrong, but unfortunately we cannot troubleshoot work we cannot see. Please include all of the work you've done on this problem, even the parts you know for sure are wrong. Thank you.

 

[Zach]

We'd be happy to check your work and help you figure out where you might have gone wrong, but unfortunately we cannot troubleshoot work we cannot see. Please include all of the work you've done on this problem, even the parts you know for sure are wrong. Thank you.

Thanks for linking me to a resource.

Smh, you're not helping anything doing this. I understand your logic; look at my mine. Just trying to figure out how to do it.

 

[ksdhart2]

Thanks for linking me to a resource.

Smh, you're not helping anything doing this. I understand your logic; look at my mine. Just trying to figure out how to do it.

Well, I can't speak for anyone else, but I find asking students to show what they've already done to be useful when determining how to tailor my help to their individual needs. After all, there's no point in providing a few hints only for it to turn out the student's already gotten that far. I got the impression from your initial post that you'd already tried this problem at least once and were getting stuck. Operating under that assumption, I was requesting to see how far you'd already gotten on your own so I could what exactly you were struggling with. However, this new post seems to suggest differently. Are you saying that my assumption was incorrect, and you, in fact, do not have any work to show? If that's the case, we can certainly start a the very beginning. Just don't be mad if it turns out the hint's less than helpful because you've already done that.

How I'd start this problem is by noticing that there's two fractions that are equal, and momentarily "forgetting" about the variable expressions. If you have an equation, \(\displaystyle \dfrac{a}{b}=\dfrac{c}{d}\), then you can cross-multiply and say that \(\displaystyle ad=bc\). Where does that lead you?

 

[Mrspi]

Anyone know a video on were I can view how something like this is solved

---

Solve the following equation, and check your solution.

. . . . .\(\displaystyle \dfrac{x\, +\, 4}{x\, +\, 2}\, =\, \dfrac{x\, -\, 4}{x\, +\, 4}\)

---

Not the same question (obviously) just a reference so I can succeed.

I've done other rational equations but this one is different than the others.. I think? I end up with numbers on each side of the equation that I can factor, so I factor them and it gives me 4 answers, but the answer key says it's supposed to be a fraction. So I am ****ing something up.

You asked for videos.....try Khan Academy, with good video lessons on many math topics. You'd be wanting one on "rational equations," I guess......

 

[Mrspi]

Easy, Zach me boy...what's "Smh" ?

We can't "look at yours": you showed no work...

For future reference, Denis, "smh" is text-speak for "shaking my head". Often appears as "smdh"...."shaking my **** head."

I usually read it as someone showing the contempt for my/our ignorance....