Answer:
11x + 4d
Explanation:
8x + 9d + 3x -5d
Group like terms.
= 8x + 3x + 9d - 5d
Add similar elements: 9d - 5d = 4d
= 8x + 3x + 4d
Add similar elements: 8x + 3x = 11x
= 11x + 4d
Combine like terms to get:
11x +4d
Answer is A
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