Simplify expression plz help

1. whats 2/3 plus 1/9 2. 5/7 plus 1/2 3.7/15 plus 2/15

What additional information could be used to prove that δxyz ≅ δfeg using asa or aas? check all that apply. ∠z ≅ ∠g and xz ≅ fg ∠z ≅ ∠g and ∠y ≅ ∠e xz ≅ fg and zy ≅ ge xy ≅ ef and zy ≅ fg ∠z ≅ ∠g and xy ≅ fe

For which rational expression is -2 an excluded value of x?