To convert the decimal \( 0.264 \) to a rational number, you would set \( x = 0.264 \) and then multiply both sides of the equation by \( 1000 \) because \( 0.264 \) has three decimal places.
Here’s how it works:
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Set \( x = 0.264 \).
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Multiply both sides by \( 1000 \):
\[ 1000x = 1000 \cdot 0.264 \] \[ 1000x = 264 \]
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Now, you can express \( x \) as a fraction:
\[ x = \frac{264}{1000} \]
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You can simplify this fraction if needed, but \( \frac{264}{1000} \) is a rational number.
So, you would multiply both sides by \( 1000 \).