Subtract 56/35 from 21/20
1st number: 1 1/20, 2nd number: 1 21/35
21/20 - 56/35 is -11/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
56/35 = 56 × 4/35 × 4 = 224/140 - Subtract the two like fractions:
147/140 - 224/140 = 147 - 224/140 = -77/140 - After reducing the fraction, the answer is -11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20-56/35 21/40-56/35 21/20-56/70 63/20-56/35 21/60-56/35