Geometry - Algebraic Proofs

Join me as I go through properties used in Algebraic and Geometric Proofs:
Addition Property of Equality, Subtraction Property of Equality, Multiplication Property of Equality, Division Property of Equality, Reflexive Property, Symmetric Property, Transitive Property, Substitution Property, and Distributive Property. This video shows 6 proofs!

Thank you so much for watching!

My name is Rory Yakubov, and I am an Algebra and Geometry teacher from NJ.

Students: Check out my Quizlet account for more practice: YakubovMath

Teachers: Check out my TPT store @iteachalgebra for all of your Algebra resources!

Instagram: @iteachalgebra
Twitter: @yakubovmath
Facebook: @iteachalgebra
Quizlet: @yakubovmath
Teachers Pay Teachers: @iteachalgebra

[pikachuandsonicadventures]

Here’s an example:
Given: 4r - 3 = 3(3r + 4)
Prove: r = -3
Statements:
1.) 4r - 3 = 3(3r + 4)
2.) 4r - 3 = 9r + 12
3.) -3 = 5r + 12
4.) -15 = 5r
5.) -3 = r
6.) r = -3

Reasons:
1.) Given
2.) Distributive Property
3.) Subtraction Property
4.) Subtraction Property
5.) Division Property
6.) Symmetric Property

[hexagonal]

Does the substitution property of equality work for when you simplify something like 3 *7?

[Pandaster]

Does the substitution property of equality work for when you simplify something like 2 *5?