I need help on this fractions problem

Question

To make the top of a dining room table, Henry glues a piece of oak that is 5/16 inch thick to a piece of pine that is 7/8 inch thick. What is the total thickness, in inches, of the tabletop?

Answer 1

(7/8) +(5/16)

=(14/16)+(5/16)

=(14+5)/16

=19/16

=1.1875 inch