Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.3 - More on Percents and Problem Solving - Problem Set 4.3 - Page 161: 9

x=3

In order to solve for x, we first need to get all of the terms with an x in them on the same side of the equation. Then, we need to isolate x by getting all of the numbers that are on the same side of the equation as x on the other side of the equation. Thus, we obtain: $x=3.36-.12x \\\\ 1.12x=3.36 \\\\ x=3$