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Home > CC2 > Chapter 7 > Lesson 7.2.2 > Problem 7-115

7-115.

For each equation below, solve for . Sometimes the easiest strategy is to use mental math.  Homework Help ✎

  1. What does 


  1. Be sure to know how to get this answer using mental math. Recognize that equals an even decimal, .


  1. What must be?