Divide Fractions

Method

Dividing Fractions

Dividing a fraction by another fraction is the same as multiplying the first fraction by the reciprocal of the second fraction.

a/b ÷ c/d = a/b * d/c

Here, b, c, and d cannot equal 0. The division of two fractions can then be considered as a multiplication of two fractions. Consider the following division of two fractions. 12/25 ÷ 3/5 The quotient can be found in three steps.

1
Multiply by the Reciprocal of the Divisor
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Keep the first fraction as is. Change the division sign with the multiplication sign and write the reciprocal of the second fraction by switching the numerator and denominator of the fraction.

2
Multiply the Fractions
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The result is now a multiplication of two fractions. The product of the fractions is the product of the numerators divided by the product of the denominators.

12/25 * 5/3
12* 5/25*3
60/75

3
Simplfy if Possible
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The resulting fraction can be simplified because 60 and 75 have a common factor. 60 & = 2^2 * 3 * 5 75 & = 3 * 5^2 The greatest common factor of the numbers is 3 *5 =15. Reduce the fraction by 15.

60/75
60/15/75/15
4/5

The division expression is equal to 45.

The same steps above are also used when dividing a fraction by a whole number, as every whole number can be thought of as a fraction with a denominator of 1.

Exercises
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