Subtract 2/49 from 21/20
1st number: 1 1/20, 2nd number: 2/49
21/20 - 2/49 is 989/980.
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,
21/20 = 21 × 49/20 × 49 = 1029/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
2/49 = 2 × 20/49 × 20 = 40/980 - Subtract the two like fractions:
1029/980 - 40/980 = 1029 - 40/980 = 989/980 - In mixed form: 19/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20-2/49 21/20-4/49 21/40-2/49 21/20-2/98 63/20-2/49 21/20-6/49 21/60-2/49 21/20-10/49 21/20-14/49