Subtract 27/49 from 1/20
1/20 - 27/49 is -491/980.
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,
1/20 = 1 × 49/20 × 49 = 49/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
27/49 = 27 × 20/49 × 20 = 540/980 - Subtract the two like fractions:
49/980 - 540/980 = 49 - 540/980 = -491/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-27/49 1/20-54/49 1/40-27/49 1/20-27/98 3/20-27/49 1/20-81/49 1/60-27/49 5/20-27/49 7/20-27/49