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Please help me with this question

Please help me with this question-example-1
User Vazque
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1 Answer

6 votes
Answer: c. f - 3 + 6d

Explanation: 5d - d + 4 + 2d - 5f - 6f - 7
- 5f - 6f = f
4 - 7 = -3
5d - d = 4d, 4d + 2d = 6d
User Lubosz
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