Subtract 28/49 from 27/20
1st number: 1 7/20, 2nd number: 28/49
27/20 - 28/49 is 109/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
27/20 = 27 × 49/20 × 49 = 1323/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
28/49 = 28 × 20/49 × 20 = 560/980 - Subtract the two like fractions:
1323/980 - 560/980 = 1323 - 560/980 = 763/980 - After reducing the fraction, the answer is 109/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-28/49 27/20-56/49 27/40-28/49 27/20-28/98 81/20-28/49 27/20-84/49 27/60-28/49