Subtract 81/16 from 28/4
1st number: 7 0/4, 2nd number: 5 1/16
28/4 - 81/16 is 31/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
28/4 = 28 × 4/4 × 4 = 112/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
81/16 = 81 × 1/16 × 1 = 81/16 - Subtract the two like fractions:
112/16 - 81/16 = 112 - 81/16 = 31/16 - In mixed form: 115/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4-81/16 28/8-81/16 28/4-81/32 84/4-81/16 28/12-81/16 28/4-81/48 28/20-81/16 28/4-81/80