What does 4/6 + 2/5 equal

How is this equation completed? i cannot find any examples in the book.

20 ! brainliest ! add and simplify your answer.

Barrett is comparing the membership fees for two museums.the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?