Subtract 1/36 from 27/21
1st number: 1 6/21, 2nd number: 1/36
27/21 - 1/36 is 317/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
27/21 = 27 × 12/21 × 12 = 324/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
1/36 = 1 × 7/36 × 7 = 7/252 - Subtract the two like fractions:
324/252 - 7/252 = 324 - 7/252 = 317/252 - In mixed form: 165/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-1/36 27/21-2/36 27/42-1/36 27/21-1/72 81/21-1/36 27/21-3/36 27/63-1/36 27/21-5/36 27/21-7/36