[A.REI.1] Reasoning With Equations and Inequalities #1

Objective

Understand solving equations as a process of reasoning and explain the reasoning. [Master linear; learn as general principle.]

• 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.