Subtract 3/16 from 21/28
21/28 - 3/16 is 9/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 28 × 4 = 112,
21/28 = 21 × 4/28 × 4 = 84/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
3/16 = 3 × 7/16 × 7 = 21/112 - Subtract the two like fractions:
84/112 - 21/112 = 84 - 21/112 = 63/112 - After reducing the fraction, the answer is 9/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28-3/16 21/28-6/16 21/56-3/16 21/28-3/32 63/28-3/16 21/28-9/16 21/84-3/16 21/28-3/48 21/28-15/16 21/28-3/80 21/28-21/16