1. Warm Up
Simplify:
5(b+4) 2)-3(2x+5)
3)4(-8-3q) 4)- 6(2b-7)

2. Simplifying Variable Expressions

3. A term is a number or the product of number and a variable
5x x y
How many terms are in this expression?

4. How many terms does each expression have?
4 + 6x - 7xy
9 + 4y
-8 - x
3r + 7s - 4t + 9

5. A constant is a term that has no variable.
5x x y

6. Like terms have identical variables same exponents 5x + 2x - 6y - 7

7. A coefficient is a number that multiplies a variable.
5x x y

8. Identifying Coefficients Like terms Constants 1) 4x+3x-9 2) x+7y-3z
3) -3a+4a+9b
4) 5s+8r-2s+7r

9. Simplify by combining like terms:
1. 5r + 3r 2. 5s – 4s

10. 3. 6x + 4 – y – 7 + 2

11. 5. 7a + 2b + 15a – 3b
6. 4x + 3 – x

12. You try!
7. – 8(6 – 2c) g + 3(3 – g) (9k – 13) 10. – 3z + 8(z + y)