Question

could someone please explain to me how to add or subtract rational expressions

Answer 1

well
a/b + c/d = (a x d + b x c)/ b x d

Answer 2

and
a/b - c/d = (a x d - b x c)/ b x d

Answer 3

here x = multiplication

Answer 4

got it?

Answer 5

if the base is same
you simply add or subtract upper part keeping the base same

Answer 6

thank you aajugdar, maybe I am just thinking to deep into this

Answer 7

its easy and basic dear. :)

Answer 8

right brain...left brain I guess ;)

Answer 9

heheh
well
did u get the method?

Answer 10

Yes I think so

Answer 11

good xP

Answer 12

here is an example to keep me busy
\[\frac{x}{x-3}+\frac{2}{x+1}=\frac{x(x+1)+2(x-3)}{(x-3)(x+1)}\]