Subtract 21/98 from 42/20
1st number: 2 2/20, 2nd number: 21/98
42/20 - 21/98 is 66/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
42/20 = 42 × 49/20 × 49 = 2058/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
21/98 = 21 × 10/98 × 10 = 210/980 - Subtract the two like fractions:
2058/980 - 210/980 = 2058 - 210/980 = 1848/980 - After reducing the fraction, the answer is 66/35
- In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-21/98 42/20-42/98 42/40-21/98 42/20-63/98 42/60-21/98