Question 892224


multiply 1/a by b/b to get b/(ab)


multiply 1/b by a/a to get a/(ab)


now that the denominators are the same, you can combine the numerators under the same denominator.


you get:


b/(ab) + a/(ab) = (b+a) / (ab) = (a+b) / (ab)


your fraction becomes (a+b) / (ab)