Subtract 45/28 from 6/20
1st number: 6/20, 2nd number: 1 17/28
6/20 - 45/28 is -183/140.
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,
6/20 = 6 × 7/20 × 7 = 42/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
45/28 = 45 × 5/28 × 5 = 225/140 - Subtract the two like fractions:
42/140 - 225/140 = 42 - 225/140 = -183/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/20-45/28 6/20-90/28 6/40-45/28 6/20-45/56 18/20-45/28 6/60-45/28 6/20-45/84 30/20-45/28 42/20-45/28