Subtract 21/5 from 12/98
1st number: 12/98, 2nd number: 4 1/5
12/98 - 21/5 is -999/245.
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,
12/98 = 12 × 5/98 × 5 = 60/490 - Likewise, for the 2nd fraction, since 5 × 98 = 490,
21/5 = 21 × 98/5 × 98 = 2058/490 - Subtract the two like fractions:
60/490 - 2058/490 = 60 - 2058/490 = -1998/490 - After reducing the fraction, the answer is -999/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/98-21/5 12/98-42/5 12/98-21/10 36/98-21/5 12/98-63/5 12/98-21/15 60/98-21/5 12/98-21/25 84/98-21/5 12/98-21/35