To solve the expression \(15 + \frac{9}{2} \times 13\), we follow the order of operations (multiplication before addition):
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First, calculate \(\frac{9}{2} \times 13\): \[ \frac{9}{2} \times 13 = \frac{9 \times 13}{2} = \frac{117}{2} \]
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Next, convert \(\frac{117}{2}\) to a decimal or a mixed number: \[ \frac{117}{2} = 58.5 \]
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Finally, add \(15\) to \(58.5\): \[ 15 + 58.5 = 73.5 \]
Therefore, the result of the expression \(15 + \frac{9}{2} \times 13\) is \(73.5\).