Subtract 15/98 from 21/45
21/45 - 15/98 is 461/1470.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 45 × 98 = 4410,
21/45 = 21 × 98/45 × 98 = 2058/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
15/98 = 15 × 45/98 × 45 = 675/4410 - Subtract the two like fractions:
2058/4410 - 675/4410 = 2058 - 675/4410 = 1383/4410 - After reducing the fraction, the answer is 461/1470
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45-15/98 21/45-30/98 21/90-15/98 63/45-15/98 21/45-45/98 21/45-75/98