Solve real-world and mathematical problems leading to two linear equations in two variables.

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
Properties of algebra and equality are used to solve linear equations and systems of equations

Analyze and solve pairs of simultaneous linear equations.