Subtract 28/98 from 21/10
1st number: 2 1/10, 2nd number: 28/98
21/10 - 28/98 is 127/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 10 × 49 = 490,
21/10 = 21 × 49/10 × 49 = 1029/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
28/98 = 28 × 5/98 × 5 = 140/490 - Subtract the two like fractions:
1029/490 - 140/490 = 1029 - 140/490 = 889/490 - After reducing the fraction, the answer is 127/70
- In mixed form: 157/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10-28/98 21/10-56/98 21/20-28/98 63/10-28/98 21/10-84/98 21/30-28/98 21/50-28/98 21/70-28/98