1. Lesson 2.3: Simplifying Variable Expressions
How do you simplify variable expressions?

2. Key Vocabulary
Terms: the parts of the expression that are added together
Coefficient: the number part of the term with a variable
Constant: the number that does not have a variable

3. Identifying parts of an expression
y + 8 – 5y – 3
Terms: Like Terms:
Coefficients: Constants:

4. Simplifying an Expression
4n – 7 – n + 9
2(x – 4) + 9x + 1

5. Simplifying an Expression
3k – 8 (k + 2)
4a – (4a – 3)

6. Writing and Simplifying an Expression
During your workout, you spend a total of 45 minutes jogging and swimming. You burn 14 calories per minute when jogging and 8 calories per minute when swimming.
cpmj · jt + cpms · st

7. Simplify the Expression
10x x
4y + 23 – y – 6
-19 – 11a + a + 16
4(d + 3) + 7d

8. Simplify the Expression
p – 5 (2 – 3p) + 1
3 (q + 4) + 4q + 1
-w + 4 – (3w -13)