Answer:
9x+27
Explanation:
7x+21+2x+6
Given expression,
→ 7(x + 3) + 2(x + 3)
Let's simplify the expression,
→ 7x + 21 + 2x + 6
→ (7x + 2x) + (21 + 6)
→ 9x + 27
→ 9(x + 3)
Hence, answer is 9x + 27.
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