How to solve a system using substitution no solution

The video tutorial explains how to solve equations using substitution. It begins by introducing the concept of substitution and the importance of isolating a variable. The instructor discusses how to choose which variable to solve for, depending on the given equations. The tutorial then demonstrates the steps to solve the equation, highlighting the importance of the distributive property and combining like terms. It concludes by explaining why some systems of equations have no solution, using the concept of parallel lines, and summarizes the key points of the substitution method.

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