Subtract 6/16 from 21/28
21/28 - 6/16 is 3/8.
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,
6/16 = 6 × 7/16 × 7 = 42/112 - Subtract the two like fractions:
84/112 - 42/112 = 84 - 42/112 = 42/112 - After reducing the fraction, the answer is 3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28-6/16 21/28-12/16 21/56-6/16 21/28-6/32 63/28-6/16 21/28-18/16 21/84-6/16 21/28-6/48 21/28-30/16 21/28-6/80 21/28-42/16