Subtract 21/10 from 56/30
1st number: 1 26/30, 2nd number: 2 1/10
56/30 - 21/10 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
56/30 = 56 × 1/30 × 1 = 56/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
21/10 = 21 × 3/10 × 3 = 63/30 - Subtract the two like fractions:
56/30 - 63/30 = 56 - 63/30 = -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-42/10 56/60-21/10 56/30-21/20 56/30-63/10 56/90-21/10 56/30-21/30 56/30-21/50 56/30-21/70