Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Solving Equations Using Addition or Subtraction
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Exercise 45 Page 132

How many cases do you have after you remove the absolute value?

2, - 2

Practice makes perfect
An absolute value measures an expression's distance from a midpoint on a number line.

|x|= 2 This equation means that the distance is 2, either in the positive direction or the negative direction. |x|= 2 ⇒ lx= 2 x= - 2 Both 2 and - 2 are solutions to the absolute value equation.