To represent the statement "eleven times the quotient of a number and 3 minus 15" as a mathematical expression, let's break it down:
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Quotient of a number and 3: Let the number be represented by \( x \). The quotient of \( x \) and 3 is \( \frac{x}{3} \).
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Eleven times the quotient: This is \( 11 \times \frac{x}{3} \), which can be written as \( \frac{11x}{3} \).
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Minus 15: Finally, subtract 15 from the previous expression.
Putting it all together, the expression becomes:
\[ \frac{11x}{3} - 15 \]
So, the expression that represents the statement is \( \frac{11x}{3} - 15 \).