Subtract 16/56 from 21/4
1st number: 5 1/4, 2nd number: 16/56
21/4 - 16/56 is 139/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 4 × 14 = 56,
21/4 = 21 × 14/4 × 14 = 294/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
16/56 = 16 × 1/56 × 1 = 16/56 - Subtract the two like fractions:
294/56 - 16/56 = 294 - 16/56 = 278/56 - After reducing the fraction, the answer is 139/28
- In mixed form: 427/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-16/56 21/4-32/56 21/8-16/56 63/4-16/56 21/4-48/56 21/12-16/56 21/4-80/56 21/20-16/56 21/28-16/56