In this lesson, you will learn how to define two unknown numbers that add up to a given number using algebra and one variable. By using the pattern that the second number will be the given number minus the first number, you can easily define the two unknown numbers. The lesson then goes on to show how to solve a problem where you have to find two numbers that add up to a given number and also satisfy a given equation involving them.
Learn how to use algebra and one variable to define more than one unknown quantity, write an equation, solve it, and check it. Shows how to define 2 variables if their sum is a given number.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com