Find the value of x in 5x + 6 = 66.

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• A 12
• B 10
• C 16
• D 12.5

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Answer: A. 12

Undo the steps: subtract 6 from both sides to get 5x = 60, then divide by 5 to get x = 12. Check: 5 x 12 + 6 = 66.

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