Geometry Algebra Proof

Introduction to 2 column proof notation - applying algebraic properties to prove a problem.

[benkelly]

Fantastic, thank you so much!! Wish you were my teacher

[YouKnowYouLoveMath]

Hey Joslyn - it depends on your textbook. I have used 3 different textbooks in the past 9 years and 2 have used substitution. The most current textbook uses combine like- terms. Use whichever one your class or textbook demonstrates

[omgalot]

wouldn't step 3) be Combine Like Terms? That is the only thing that confused me!