What is an equation

The video tutorial introduces the concept of equations as mathematical sentences with an equal sign. It explains the equal sign's role in representing equality in value, using examples like 4 equals 4. The tutorial also covers how different expressions can represent the same value, such as 2 plus 2 equals 3 plus 1. It introduces variables in equations, explaining that for an equation like x equals 5 to be true, x must have a value of 5. The video concludes with a brief summary and encourages viewers to try solving equations.

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