Subtract 56/30 from 3/21
1st number: 3/21, 2nd number: 1 26/30
3/21 - 56/30 is -181/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
3/21 = 3 × 10/21 × 10 = 30/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
56/30 = 56 × 7/30 × 7 = 392/210 - Subtract the two like fractions:
30/210 - 392/210 = 30 - 392/210 = -362/210 - After reducing the fraction, the answer is -181/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21-56/30 3/42-56/30 3/21-56/60 9/21-56/30 3/63-56/30 3/21-56/90 15/21-56/30