Subtract 7/40 from 27/20
1st number: 1 7/20, 2nd number: 7/40
27/20 - 7/40 is 47/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
27/20 = 27 × 2/20 × 2 = 54/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
7/40 = 7 × 1/40 × 1 = 7/40 - Subtract the two like fractions:
54/40 - 7/40 = 54 - 7/40 = 47/40 - In mixed form: 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-7/40 27/20-14/40 27/40-7/40 27/20-7/80 81/20-7/40 27/20-21/40 27/60-7/40 27/20-35/40 27/20-49/40