Subtract 98/20 from 25/28
1st number: 25/28, 2nd number: 4 18/20
25/28 - 98/20 is -561/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
25/28 = 25 × 5/28 × 5 = 125/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
98/20 = 98 × 7/20 × 7 = 686/140 - Subtract the two like fractions:
125/140 - 686/140 = 125 - 686/140 = -561/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/28-98/20 25/56-98/20 25/28-98/40 75/28-98/20 25/84-98/20 25/28-98/60