Overview

The purpose of this lesson is to understand how we solve an equation for an unknown value. We usually represent the unknown value with the letter "x".

This lesson will address the following CCRS Standard(s) for Algebra:

A.REI.1: Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method
A.REI.3: Solve linear equations and inequalities in one variable, including equations with coefficients represented by letters

Directions

Take notes while watching videos below
Go to http://wamap.org and log into our course to complete assignment 1.C with 80% or better.

Watch

Solving Linear Equations [12:27]

Do

Complete assignment 1.C with 80% or better at http://wamap.org

Summary

In this lesson we have learned:

Solve equations by:
- Isolating the variable by doing opposite operations
- Always doing the same thing to both sides of the "="
- When solving, work backwards with order of operations: First add or subtract, then multiply or divide.