In this lesson, we continue solving puzzles and riddles, otherwise known as word problems, using two variables. The instructor explains how to write two equations and decide whether to use the substitution or addition method. He walks through two example problems with clear explanations and shows how to check the answers to make sure they work. By the end of the lesson, students will have a better understanding of how to solve complex word problems using two variables.
Provides explanation of how to solve word problems using two variables.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com