### Home > CCAA > Chapter 8 Unit 10 > Lesson CC3: 8.2.3 > Problem 8-92

8-92.

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

Can you use mental math to solve this equation?

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

What mustbe?