Best Answer

Multiply the whole number by the denominator or the fraction and add that to the numerator.

For example,

2 5/8 = ((2 x 8)+5)/8 = 21/8

Q: How do you change a mixed fraction into a improper fraction?

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If its not an improper fraction then you cant....

An improper fraction is a fraction. It can't become a proper fraction.

You do the numerator divided by the denominator, then simplify the fractions if you can. (this is how you change a improper fraction to a mixed number, you cannot change a proper fraction to a mixed number)

improper fraction

improper fraction

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First you would want to change the mixed number to an improper fraction. Then you can subtract

If its not an improper fraction then you cant....

You change them into improper or topheavy fractions.

An improper fraction is a fraction. It can't become a proper fraction.

You change it into an improper fraction, then simplify it, then if you want to, change it back to a mixed number.

You do the numerator divided by the denominator, then simplify the fractions if you can. (this is how you change a improper fraction to a mixed number, you cannot change a proper fraction to a mixed number)

I wouldconvert both to improper fraction,find a common multiple (CM),calculate equivalent fraction with CM as the denominator,add the numerators,change the improper fraction to a mixed fraction, if required,simplify the fractional part of the mixed fraction - if appropriate and required.

improper fraction

improper fraction

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I don't think you can but, you can change an improper fraction to a decimal.

improper fraction