Subtract 5/8 from 27/21
1st number: 1 6/21, 2nd number: 5/8
27/21 - 5/8 is 37/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
27/21 = 27 × 8/21 × 8 = 216/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
5/8 = 5 × 21/8 × 21 = 105/168 - Subtract the two like fractions:
216/168 - 105/168 = 216 - 105/168 = 111/168 - After reducing the fraction, the answer is 37/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-5/8 27/21-10/8 27/42-5/8 27/21-5/16 81/21-5/8 27/21-15/8 27/63-5/8 27/21-5/24 27/21-25/8 27/21-5/40 27/21-35/8 27/21-5/56