Subtract 27/49 from 21/18
1st number: 1 3/18, 2nd number: 27/49
21/18 - 27/49 is 181/294.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 18 × 49 = 882,
21/18 = 21 × 49/18 × 49 = 1029/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
27/49 = 27 × 18/49 × 18 = 486/882 - Subtract the two like fractions:
1029/882 - 486/882 = 1029 - 486/882 = 543/882 - After reducing the fraction, the answer is 181/294
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18-27/49 21/18-54/49 21/36-27/49 21/18-27/98 63/18-27/49 21/18-81/49 21/54-27/49 21/90-27/49