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Margaret [11]
3 years ago
15

How to make a mixed number a improper fraction ​

Mathematics
1 answer:
Elena L [17]3 years ago
6 0

A mixed number of the form a\frac{b}{c} can be turned into an improper fraction by using the fact that a mixed number is really het whole number plus its fraction part, so

  a\frac{b}{c} = {\displaystyle a + \frac{b}{c}=\frac{a}{1}+\frac{b}{c}}

Then do the usual procedure for adding fractions via common denominator.

For example, to convert the mixed number 5 \frac{1}{4} into an improper fraction, we have

  5\frac{1}{4}={\displaystyle 5 +\frac{1}{4}=\frac{5}{1}+\frac{1}{4}}

To add \frac{5}{1}+\frac{1}{4}, we need \frac{5}{1} to have a denominator of 4, so we multiply the numerator and denominator by 4 to get

   =\frac{5\cdot 4}{1 \cdot 4}+\frac{1}{4}=\frac{20}{4}+\frac{1}{4} = \frac{21}{4}

Therefore,

  5\frac{1}{4} = \frac{21}{4}

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Picture of the question is attached below.

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