Subtract 2/16 from 30/21
1st number: 1 9/21, 2nd number: 2/16
30/21 - 2/16 is 73/56.
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,
30/21 = 30 × 16/21 × 16 = 480/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
2/16 = 2 × 21/16 × 21 = 42/336 - Subtract the two like fractions:
480/336 - 42/336 = 480 - 42/336 = 438/336 - After reducing the fraction, the answer is 73/56
- In mixed form: 117/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21-2/16 30/21-4/16 30/42-2/16 30/21-2/32 90/21-2/16 30/21-6/16 30/63-2/16 30/21-2/48 30/21-10/16 30/21-2/80 30/21-14/16