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.
Patterns, Functions, and Algebraic Structures
- Are fluent with basic numerical and symbolic facts and algorithms, and are able to select and use appropriate (mental math, paper and pencil, and technology) methods based on an understanding of their efficiency, precision, and transparency
Solutions to equations, inequalities and systems of equations are found using a variety of tools
Understand solving equations as a process of reasoning and explain the reasoning