Subtract 2/30 from 7/20
7/20 - 2/30 is 17/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
7/20 = 7 × 3/20 × 3 = 21/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
2/30 = 2 × 2/30 × 2 = 4/60 - Subtract the two like fractions:
21/60 - 4/60 = 21 - 4/60 = 17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-2/30 7/20-4/30 7/40-2/30 7/20-2/60 21/20-2/30 7/20-6/30 7/60-2/30 7/20-2/90 35/20-2/30 7/20-10/30 49/20-2/30 7/20-14/30