Question

A piece of yarn 29 inches long is cut into two parts. If one of the resulting pieces is m inches long, represent the length of the other piece.

Answer 1

For this case we have the following equation:
piece 1 + piece 2 = 29
Substituting the value of:
piece 2 = m
we have:
piece 1 + m = 29
Clearing we have:
piece 1 = 29 - m
Answer:
The length of the other piece is:
29-m