Let's find ways to work with subtraction in expressions.

Let's use the distributive property to write expressions in different ways.

Let's see how we can tell that expressions are equivalent.

Let’s see how to use properties correctly to write equivalent expressions.

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 expressions to solve problems.