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Like Terms Review

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Like Terms Review

Algebraic expressions with variables

📚 Part 1: Identifying Like Terms

Instructions: Circle or highlight the like terms in each expression using the same color for matching terms.

1. 5x + 3y - 2x + 7 - y
2. 4a - 3b + 8a + b - 5
3. 9m + 5n - 6m + 2n + 10
4. Which pairs are like terms? Check all that apply:

7x and -3x

5y and 5z

-2 and 8

4ab and 6ab

✏️ Part 2: Combining Like Terms

Instructions: Combine like terms to simplify each expression. Show your work in the space provided.

5. 7p - 2q + 4p + 6 - q

Simplified expression: _________________________

6. 3x - 4 + 5 - 2x + 9

Simplified expression: _________________________

7. 12y + 8z - 5y + 3z - 7

Simplified expression: _________________________

8. Which expression is equivalent to 6a + 3b - 2a + 5b?

4a + 8b

8a + 3b

6a + 5b

4a + 2b

🎯 Part 3: Challenge Problems

9. Simplify: 15x + 8y - 9x + 3y - 12 + 5

Final answer: _________________________

10. True or False: The expressions 4x + 7y - 2x and 2x + 7y are equivalent.

True

False

Explain your reasoning:

11. Write an expression with at least 6 terms that simplifies to 3a + 2b - 5:

📝 Answer Key

1. Like terms: 5x and -2x; 3y and -y; 7 (constant)
2. Like terms: 4a and 8a; -3b and b; -5 (constant)
3. Like terms: 9m and -6m; 5n and 2n; 10 (constant)
4. Correct answers: ✓ 7x and -3x; ✓ -2 and 8; ✓ 4ab and 6ab
Explanation: Like terms must have the same variable(s) with the same exponents. 5y and 5z are not like terms because they have different variables.
5. 11p - 3q + 6
Work: (7p + 4p) + (-2q - q) + 6 = 11p - 3q + 6
6. x + 10
Work: (3x - 2x) + (-4 + 5 + 9) = x + 10
7. 7y + 11z - 7
Work: (12y - 5y) + (8z + 3z) - 7 = 7y + 11z - 7
8. 4a + 8b
Explanation: Combine like terms: (6a - 2a) + (3b + 5b) = 4a + 8b
9. 6x + 11y - 7
Work: (15x - 9x) + (8y + 3y) + (-12 + 5) = 6x + 11y - 7
10. True
Explanation: Simplifying 4x + 7y - 2x gives us (4x - 2x) + 7y = 2x + 7y, which is the same as the second expression.
11. Sample answer: 5a - 2a + 4b - 2b + a - 8 + 3
Note: Many correct answers are possible as long as the expression has at least 6 terms and simplifies to 3a + 2b - 5.

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