1. Review of 9.1-9.5

2. Definitions

12. Example problem Ex: Find an expression for the area of a room with the following floor plan? d a b c

13. Solving Equations How can we change an equation without changing the solutions?

14. Solving Equations How can we change an equation without changing the solutions? 1)Use properties of arithmetic to simplify the expression on one side of the equation

15. Solving Equations How can we change an equation without changing the solutions? 1)Use properties of arithmetic to simplify the expression on one side of the equation 2)Add/subtract the same quantity (can include variables) to both sides of the equation

16. Solving Equations How can we change an equation without changing the solutions? 1)Use properties of arithmetic to simplify the expression on one side of the equation 2)Add/subtract the same quantity (can include variables) to both sides of the equation 3)Multiply/divide the same nonzero quantity (can also include variables*) on each side of the equation

17. Other example problems See activity 9T, problems 1, 2, and 4 See activity 9W, problems 1 and 2