Subtract 50/28 from 9/20
1st number: 9/20, 2nd number: 1 22/28
9/20 - 50/28 is -187/140.
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,
9/20 = 9 × 7/20 × 7 = 63/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
50/28 = 50 × 5/28 × 5 = 250/140 - Subtract the two like fractions:
63/140 - 250/140 = 63 - 250/140 = -187/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-50/28 9/40-50/28 9/20-50/56 27/20-50/28 9/60-50/28 9/20-50/84 45/20-50/28 63/20-50/28