Subtract 2/16 from 1/21
1/21 - 2/16 is -13/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
2/16 = 2 × 21/16 × 21 = 42/336 - Subtract the two like fractions:
16/336 - 42/336 = 16 - 42/336 = -26/336 - After reducing the fraction, the answer is -13/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21-2/16 1/21-4/16 1/42-2/16 1/21-2/32 3/21-2/16 1/21-6/16 1/63-2/16 1/21-2/48 5/21-2/16 1/21-10/16 1/21-2/80 7/21-2/16 1/21-14/16