How do you represent 4/7 + 3/14 on a number line?

For the equations below which statement is true ? -2x=14 6x=-42

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|