Subtract 27/20 from 14/42
1st number: 14/42, 2nd number: 1 7/20
14/42 - 27/20 is -61/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
14/42 = 14 × 10/42 × 10 = 140/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
27/20 = 27 × 21/20 × 21 = 567/420 - Subtract the two like fractions:
140/420 - 567/420 = 140 - 567/420 = -427/420 - After reducing the fraction, the answer is -61/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/42-27/20 14/42-54/20 14/84-27/20 14/42-27/40 14/42-81/20 14/42-27/60 70/42-27/20 98/42-27/20