Subtract 7/20 from 27/49
27/49 - 7/20 is 197/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
27/49 = 27 × 20/49 × 20 = 540/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Subtract the two like fractions:
540/980 - 343/980 = 540 - 343/980 = 197/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/49-7/20 27/49-14/20 27/98-7/20 27/49-7/40 81/49-7/20 27/49-21/20 27/49-7/60 27/49-35/20 27/49-49/20