1. EQ: How do I Combine Like Terms?
Standard EE.1:
Apply properties of operations as strategies
to add, subtract, factor, and expand linear
expressions with rational coefficients.

2. Vocabulary
Constant
A number on its own.
Examples: 1, 2, 47, 925

3. Variable Vocabulary A letter that represents an unknown number.
Examples: a, b, x, y

4. Coefficient Vocabulary The number in front of the variable.
Examples: 3x is the coefficient
-2x is the coefficient

5. Exponent Vocabulary The number “on top” of the variable.
Example: x³ 3 is the exponent

6. Simplify Vocabulary Rewrite an expression as simply as possible.
Reducing to lowest terms.

7. 5 + 3 8

8. 5 cats + 3 cats
8 cats

9. 5 boxes + 3 boxes
8 boxes

10. 5 pillows + 3 pillows
8 pillows

11. 5a + 3a 8a

12. 5b + 3b 8b

13. 5c + 3c 8c

14. 5 cats + 3 dogs
5 cats + 3 dogs

15. 5 apples + 3 oranges
5 apples + 3 oranges

16. 8

17. 8

18. 8

19. 12r – 8 – 12
12r –8 –12

20. 12r –8 –12
12r – 20

21. 1) 3r – r 2) 7 -2e +14 3) -3t + 5 -6t 4) 15 – 3 + 2y -3y

22. 1) 3r – r 2r 2) 7 -2e +14 3) -3t + 5 -6t 4) 15 – 3 + 2y -3y

23. 1) 3r – r 2r 2) 7 -2e +14 -2e+21 3) -3t + 5 -6t 4) 15 – 3 + 2y -3y

24. 1) 3r – r 2r 2) 7 -2e +14 -2e+21 3) -3t + 5 -6t -9t + 5 4) 15 – 3 + 2y -3y

25. 1) 3r – r 2r 2) 7 -2e +14 -2e+21 3) -3t + 5 -6t -9t + 5 4) 15 – 3 + 2y -3y -y + 12