If 3x + 7 = 28, find x.

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Accepted Answer

1. Subtract 7 from both sides: $3x = 28 - 7 = 21$.
2. Divide both sides by 3: $x = 21/3 = 7$.
3. So $x = 7$, which is option **(a)**.

FINAL_ANSWER: <a>

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Answer

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