Subtract 3/12 from 20/56
20/56 - 3/12 is 3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 12 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
20/56 = 20 × 3/56 × 3 = 60/168 - Likewise, for the 2nd fraction, since 12 × 14 = 168,
3/12 = 3 × 14/12 × 14 = 42/168 - Subtract the two like fractions:
60/168 - 42/168 = 60 - 42/168 = 18/168 - After reducing the fraction, the answer is 3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56-3/12 20/56-6/12 20/56-3/24 60/56-3/12 20/56-9/12 20/56-3/36 20/56-15/12 20/56-3/60 20/56-21/12 20/56-3/84