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Apple QuickTime movie  |  1996-10-02  |  17.0 MB  |  160x120  |  30fps  |  2 minutes, 27 seconds
Transcription: The equation is one of the most important ideas in algebra. Let's review some of the things that we probably have already been exposed to regarding equations. Here's an equation and notice its structure. It's simply an expression set equal to another expression. What we usually do with equations is solve them. Now solving means finding the value of the letter or letters, the variables you see, that would cause the statement or the equation to be true. Now those values that we find that make this statement true are called solutions. Well, this particular one is solved by replacing x with four. ...