Learn How To Isolate the ABS Sign to Solve Absolute Value Equations

The video tutorial explains how to solve an equation involving absolute values. It begins with an example problem where the absolute value is multiplied by three and subtracted by one. The teacher outlines a process to isolate the absolute value by undoing addition and subtraction, followed by multiplication. Once isolated, two cases are created and solved. The solutions are verified by plugging them back into the equation where the absolute value is isolated, ensuring accuracy with less work.

How do you check if your solutions for X are correct?

What is the significance of plugging the answers back into the original equation?