Subtract 14/21 from 20/60
20/60 - 14/21 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
20/60 = 20 × 7/60 × 7 = 140/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
14/21 = 14 × 20/21 × 20 = 280/420 - Subtract the two like fractions:
140/420 - 280/420 = 140 - 280/420 = -140/420 - After reducing the fraction, the answer is -1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/60-14/21 20/60-28/21 20/60-14/42 20/60-42/21 20/60-14/63 20/60-70/21 20/60-98/21