Seven more than two times a certain number is 181. Find the number.

(B) 87

Explanation

Let x represent the unknown number. The statement “seven more than two times a certain number is 181” becomes the equation:
7+2x=181
Subtract 7 from both sides, then divide the resulting equation by 2.
7+2x=181
7+2x−7=181−7
\(2 x=1742 x \div 2=174 \div 2 x=87\)

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