Subtract 20/49 from 21/5
1st number: 4 1/5, 2nd number: 20/49
21/5 - 20/49 is 929/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 49 is 245
Next, find the equivalent fraction of both fractional numbers with denominator 245 - For the 1st fraction, since 5 × 49 = 245,
21/5 = 21 × 49/5 × 49 = 1029/245 - Likewise, for the 2nd fraction, since 49 × 5 = 245,
20/49 = 20 × 5/49 × 5 = 100/245 - Subtract the two like fractions:
1029/245 - 100/245 = 1029 - 100/245 = 929/245 - In mixed form: 3194/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-20/49 21/5-40/49 21/10-20/49 21/5-20/98 63/5-20/49 21/5-60/49 21/15-20/49 21/25-20/49 21/35-20/49