Can someone explain this? i missed this lesson in class, and now i'm stuck!

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

Evan walked 5/8 mile to his friends house.then together they walked 7/12 mile to the movie theatre.which pair of fraction can evan use to find how far he walked in all?