Subtract 49/16 from 21/5
1st number: 4 1/5, 2nd number: 3 1/16
21/5 - 49/16 is 91/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
21/5 = 21 × 16/5 × 16 = 336/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
49/16 = 49 × 5/16 × 5 = 245/80 - Subtract the two like fractions:
336/80 - 245/80 = 336 - 245/80 = 91/80 - In mixed form: 111/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-49/16 21/5-98/16 21/10-49/16 21/5-49/32 63/5-49/16 21/15-49/16 21/5-49/48 21/25-49/16 21/5-49/80 21/35-49/16