How Do You Solve an Equation Using Addition?

What assumptions are made in order to solve equations? An instructional slideshow provides an overview and guided examples of how properties of equality can be used to justify each step in solving equations.

Learns will name the property of equality demonstrated in each example. Problems include addition, multiplication, subtraction, and division properties of equality.

A basic definition of the addition property of equality. Use this video to recap a lesson on the addition property of equality, or have learners use it as a reference tool when they are working at home.

A basic definition of the addition property of equality. Use this video to recap a lesson on the addition property of equality, or have learners use it as a reference tool when they are working at home.

Solve a proportion where the variable is the numerator of one of the fractions. How? Just use the multiplication property of equality. This means multiply both sides by the reciprocal value of the denominator. Then the variable will be...

A brief description of the division property of equality using variables to demonstrate. Learners might need more concrete examples to fully understand the concept.

A brief description of the division property of equality using variables to demonstrate. Learners might need more concrete examples to fully understand the concept.

You have an equation with an unknown variable and fractions. How do you solve this kind of equation? You can do it using the addition property of equality to first isolate the variable. Then, combine the fractions and since they have a...

This video lesson reviews the properties of equality and demonstrates how to use them to solve equations. Students can check their understanding with an assessment.

Provides examples and a video lesson that illustrates the properties of equalities.