In this lesson, Julie Harland teaches how to solve a word problem using a system of equations with three variables. By defining the variables and writing three equations, she shows how to use the elimination method to solve for the price per pound of apples, berries, and cherries. The lesson demonstrates how to check the validity of the answer by ensuring that the prices calculated make sense in the original problem.
A word problem is solved using a system of 3 equations with 3 variables.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com