Subtract 20/27 from 21/98
21/98 - 20/27 is -199/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 27 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 98 × 27 = 2646,
21/98 = 21 × 27/98 × 27 = 567/2646 - Likewise, for the 2nd fraction, since 27 × 98 = 2646,
20/27 = 20 × 98/27 × 98 = 1960/2646 - Subtract the two like fractions:
567/2646 - 1960/2646 = 567 - 1960/2646 = -1393/2646 - After reducing the fraction, the answer is -199/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-20/27 21/98-40/27 21/98-20/54 63/98-20/27 21/98-60/27 21/98-20/81