What is (8+27)+52 and 8+(27+52) . and are they equivalent if so what property applied if not explain

Which fraction below is equivalent to 10/12?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate