Let’s write equations in new ways.

Let's figure out unknown weights on balanced hangers.

Let's rewrite equations while keeping the same solutions.

Let's rewrite some more equations while keeping the same solutions.

Let's solve linear equations.

Let's solve linear equations like a boss.

Let’s think about how many solutions an equation can have.

Let’s solve equations with different numbers of solutions.

Let’s use equations to think about situations.

Let’s interpret the meaning of points in a coordinate plane.

Let’s use lines to think about situations.

Let’s learn what a system of equations is.

Let’s solve systems of equations.

Let’s solve systems of equations.

Let’s write systems of equations from real-world situations.

Let's solve some gnarly problems.