During her trip to California last weekend, Ms. Dufresne rode in a car for 42 miles,

Question:

During her trip to California last weekend, Ms. Dufresne rode in a car for 42 miles, rode a bike for 5 miles, and rode in a bus for 23 miles. Write two equivalent expressions that could be used to find the total distance that Ms. Dufresne traveled.
Explain what property you applied to write equivalent expressions.