Question

what do you do when you add rational expressions?

Answer 1

like ½ + ¼ = 1/x

Answer 2

I don't want the answer, I just want to know what to do. The answer has to be 1/something. I figured out how to get that, you would cross multiply and then simplify but I don't know if that is really the way to solve something like this.

Answer 3

@ganeshie8

Answer 4

@thomaster @Ashleyisakitty

Answer 5

@phi

Answer 6

Hi @KateNicole! Do you know this?

Answer 7

Hi @chasertyy! Do you think you could help?

Answer 8

Guys, I do give medals if that is what you are worried about. I just need this one thing

Answer 9

@timo86m @triston69 @Darrius @SolomonZelman can any of you please heed? Before any of you ask why you were tagged, I tagged you because I need this help and nobody is coming to the rescue

Answer 10

Please???

Answer 11

I am becoming frustrated. I really need help and all anybody is doing is coming to my question watching for 5inutes and then leaving

Answer 12

½ + ¼ = 1/x

if we multiply the ½ by 2/2 we get 2/4 and the problem is
\[ \frac{2}{4} + \frac{1}{4} = \frac{2+1}{4} = \frac{3}{4} \]

I am not sure why you want
\[ \frac{3}{4} = \frac{1}{x} \]
but if you do, we solve for x. the easiest way is "flip" both sides
\[ \frac{4}{3} = x \]
in other words:
\[ \frac{1}{2}+ \frac{1}{4}= \frac{1}{\frac{4}{3}} \]

Answer 13

Oh okay! Thank you so much!! I was so confused lol Thanks again!

Answer 14

If you need short videos to refresh your memory on fractions, see
http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic

Answer 15

Oh wow! That helped a lot! Thanks! Sorry I didn't see this sooner. This is the first time I have gotten on in a week and a half.