### Home > CC3 > Chapter 8 > Lesson 8.2.3 > Problem 8-92

8-92.

For each equation below, solve for

*x*. Sometimes the easiest strategy is to use mental math. Homework Help ✎5.2 +

*x*= 10.952

*x*− 3.25 = 7.15

Can you use mental math to solve this equation?

*x* = 5.75

*x* = 5.2

Be sure to know how to get this answer using mental math. Recognize that 3.25 + 7.15 equals an even decimal, 10.4.

8(2) = 16

What must *x* be?