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Combining Like Terms
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Combining Like Terms
📚 Part 1: Multiple Choice
1. Simplify: 3x + 7x = _______
4x
10x
21x
3x + 7x
2. Check all that apply: Which pairs are like terms?
4x and -3x
2x and 2x²
5xy and 3yx
7 and -2
3. Simplify: 3x + 7 + 2x + 4 = _______
5x + 11
6x + 11
5x + 3
3x + 11
4. Simplify: 2x² + 3x + 4x² - x + 10 = _______
6x² + 2x + 10
8x² + 2x + 10
6x² + 4x + 10
2x² + 2x + 10
✏️ Part 2: Short Answers
5. Identify and group the like terms, then simplify: 4a + 7 - 3a + 2b
6. Simplify: -3y + 8y - 5
7. Simplify by combining like terms: 2x + 3xy - x + 4xy
8. Simplify: 6 - 2 + 3z - z
9. In one or two sentences, explain why only like terms can be combined. Use mathematical language (term, coefficient, variable, constant).
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