**Simplify algebraic expressions involving the four operations**

(ACMNA192)

(ACMNA192)

**LO:To simplify algebraic expressions**

**Know:**

- What an expression is
- The four basic operations of numeracy

**Understand:**

- That we can simplify algebraic expressions..

**Do:**

- I can simplify algebraic expressions..

**Essential Questions:**

- How can expressions be simplified?

*Like/Unlike Terms*

### Terms containing exactly the same pronumerals are called **liked** terms.

Eg.) 3x and 7x are like terms because they have the same variables.

### 5a and 7b are **unlike** terms because they have different variables.

**Combining Like Terms**

**Combining Like Terms**

### We can simplify expressions by adding or subtracting like terms.

### Eg.)

3a + 6a = 9a

10p – 2p = 8p

### An easy way to think about it is. If I had 3 apples and I’m adding another 6 apples to it, I would have 9 apples in total.

### If I had 10 pears and subtracted 2 pears, I would have 8 pears remaining.

### We can not simplify expressions by adding or subtracting unlike terms.

### Eg.)

3a – 8p

### If I had 3 apples, I can’t take away 8 pears from it.

**Simplifying Expressions Videos**

**Simplifying Expressions Videos**

**Student Generated Videos**

**Student Generated Videos**