Subtract 9/5 from 21/98
1st number: 21/98, 2nd number: 1 4/5
21/98 - 9/5 is -111/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 5 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Likewise, for the 2nd fraction, since 5 × 98 = 490,
9/5 = 9 × 98/5 × 98 = 882/490 - Subtract the two like fractions:
105/490 - 882/490 = 105 - 882/490 = -777/490 - After reducing the fraction, the answer is -111/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-9/5 21/98-18/5 21/98-9/10 63/98-9/5 21/98-27/5 21/98-9/15 21/98-45/5 21/98-9/25 21/98-63/5 21/98-9/35