Finding Solutions to Equations Using a Number Line

The video tutorial explains how to solve the equation 7 + m = 20 using a number line. It begins by introducing the concept of equations and variables, emphasizing the importance of the equals sign as a symbol of balance. A real-world example involving marbles is used to illustrate the concept. The tutorial then demonstrates solving the equation through substitution and verifies the solution using a number line, concluding that the equation has only one solution.

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