Simplify each expression.
1. 3x + 6x
2. y + y + y + y + y
3. 6 . b
4. 4z - 2z + 5z
5. 15m + 7m - 9m
6. 8n - 8n
7. 4c + 2c - 3c
8. 9j + 3j - 5j
9. 11m + 7m - 2m
10. 9r + 3r +2r
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Simplify each expression.
1. 3x + 6x
2. y + y + y + y + y
3. 6 . b
4. 4z - 2z + 5z
5. 15m + 7m - 9m
6. 8n - 8n
7. 4c + 2c - 3c
8. 9j + 3j - 5j
9. 11m + 7m - 2m
10. 9r + 3r +2r
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Answer:
1. 9x
2. 5y
3. 6b
4. 7z
5. 13m
6. 0
7. 4c
8. 7j
9. 14m
10. 14r