Subtract 27/21 from 72/16
1st number: 4 8/16, 2nd number: 1 6/21
72/16 - 27/21 is 45/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
27/21 = 27 × 16/21 × 16 = 432/336 - Subtract the two like fractions:
1512/336 - 432/336 = 1512 - 432/336 = 1080/336 - After reducing the fraction, the answer is 45/14
- In mixed form: 33/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/16-54/21 72/32-27/21 72/16-27/42 72/16-81/21 72/48-27/21 72/16-27/63 72/80-27/21