Question

A piece of wood trim is 51 3/8 in.long. A piece 31 5/6 in. long is cut from it. How long is the remaining piece of wood if the cut removes 1.8 in. of wood?

Answer 1

\[51\frac{3}{8}-31\frac{5}{6}-1.8\]

Answer 2

i dont know how to do it though?].

Answer 3

Try this
http://www.khanacademy.org/video/subtracting-mixed-numbers?playlist=Developmental+Math