$\"\"$

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1 mile = 1.61 kilometers

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1 kilometer = $\"\"$ mile

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50 km/hour changes to miles per hour $\"\"$

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= $\"\"$ × $\"\"$ ( Cancel the common unit kilometer )

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= $\"\"$

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Simplify $\"\"$

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= $\"\"$ $\"\"$

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$\"\"$ = $\"\"$