Subtract 10/49 from 21/20
1st number: 1 1/20, 2nd number: 10/49
21/20 - 10/49 is 829/980.
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,
10/49 = 10 × 20/49 × 20 = 200/980 - Subtract the two like fractions:
1029/980 - 200/980 = 1029 - 200/980 = 829/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20-10/49 21/20-20/49 21/40-10/49 21/20-10/98 63/20-10/49 21/20-30/49 21/60-10/49 21/20-50/49 21/20-70/49