Subtract 98/28 from 21/20
1st number: 1 1/20, 2nd number: 3 14/28
21/20 - 98/28 is -49/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
98/28 = 98 × 5/28 × 5 = 490/140 - Subtract the two like fractions:
147/140 - 490/140 = 147 - 490/140 = -343/140 - After reducing the fraction, the answer is -49/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20-98/28 21/40-98/28 21/20-98/56 63/20-98/28 21/60-98/28 21/20-98/84