Unit 2 Chapter 2 Section 5 Solving Two Step Equations.notebook
October 26, 2015
Unit 2
Chapter 2 Section 5
Solving Two-Step Equations
Objective: To solve two-step equations using inverse operations.
For many equations, you can undo addition or subtraction first. Then you
can multiply or divide to get the variable alone.
Jun 6­8:17 PM
1
Unit 2 Chapter 2 Section 5 Solving Two Step Equations.notebook
October 26, 2015
Examples:
Solving Two­Step Equations
t
3
1) 2n + 1 = 7
­
2) ­20 = 4
3) 28 = ­3x ­ 2 w
4) + 8 = 14
5) 50 = 6d + 8
6)
­3
Jun 10­10:28 AM
2
Unit 2 Chapter 2 Section 5 Solving Two Step Equations.notebook
October 26, 2015
Challenge
Write and solve an equation for each situation.
A skating rink rents skates at $3.95 for the first hour plus $1.25 for each additional hour. When you returned your skates, you paid $7.70. How many additional hours did you keep the skates?
The sum of the measures of the angles in a triangle is 180 degrees. One angle measures 45 degrees. The measures of the other two angles are equal. What is the measure of each of the other two angles?
Jul 26­12:40 PM
3
Unit 2 Chapter 2 Section 5 Solving Two Step Equations.notebook
October 26, 2015
Homework
Practice Worksheet 2­5
Jun 10­11:25 AM
4