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To change a mixed number to improper fraction, multiply the whole number by the denominator, then add the numerator. Put this result over the denominator.

For example 4 4/12

Multiply 4 X 12 = 48

Add to the numerator: 48 + 4 = 52.

Put this result over the denominator: 52/12

This still is not in simplest form, so divide top and bottom by 4.

52/12 = 13/3

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8y ago

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