How many cases do you have after you remove the absolute value?
2/3, -20/3
Practice makes perfect
An absolute value measures an expression's distance from a midpoint on a number line.
|3x+9|= 11
This equation means that the distance is 11, either in the positive direction or the negative direction.
|3x+9|= 11 ⇒ l3x+9= 11 3x+9= - 11
To find the solutions to the absolute value equation, we need to solve both of these cases for x. Let's approach them one at a time.
