Question

Sam drew a line that was 3 5/6 inches long. If he drew a second line that was 4 7/8 inches longer, wath is the length of the second line?

Answer 1

The length of the second line is 8 17/24 inches.

Answer 2

Well if the second line was that much longer, you add the value of the first line to the second line SINCE the second line was THAT much longer.
Therefore 3 5/6 + 4 7/8 = 8 17/24 (total for second line)