Arithmetic/Multiplying Fractions
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Multiplying fractions[edit]
To multiply two fractions:
 multiply the numerators to get the new numerator, and
 multiply the denominators to get the new denominator.
For instance,


 .

Dividing fractions[edit]
To divide one fraction by another one, flip numerator and denominator of the second one, and then multiply the two fractions. The flippedover fraction is called the multiplicative inverse or reciprocal.
For instance,


 .

To simplify a compound fraction, like , just remember that a fraction is the same as division, and divide (3/5) ÷ (1/4), which comes to 12/5.