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Absolute Value Equations - Problem 5

Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

To solve an absolute value equation, you will want to follow three steps: first, isolate the absolute value expression by "undoing" what is going on outside the absolute value. Next, replace the absolute value signs with +- ( ) . Then separate the + - into two different equations and solve each one separately. If done correctly, you could have no solutions or one solution, but most often, you'll have two solutions. They could be positive or negative. Substitute each of these separately back in for x to make sure your work is correct.

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