Subtract 21/3 from 90/98
1st number: 90/98, 2nd number: 7 0/3
90/98 - 21/3 is -298/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 3 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
90/98 = 90 × 3/98 × 3 = 270/294 - Likewise, for the 2nd fraction, since 3 × 98 = 294,
21/3 = 21 × 98/3 × 98 = 2058/294 - Subtract the two like fractions:
270/294 - 2058/294 = 270 - 2058/294 = -1788/294 - After reducing the fraction, the answer is -298/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/98-42/3 90/98-21/6 90/98-63/3 90/98-21/9 90/98-21/15