Subtract 5/20 from 45/56
45/56 - 5/20 is 31/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
45/56 = 45 × 5/56 × 5 = 225/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
5/20 = 5 × 14/20 × 14 = 70/280 - Subtract the two like fractions:
225/280 - 70/280 = 225 - 70/280 = 155/280 - After reducing the fraction, the answer is 31/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56-5/20 45/56-10/20 45/56-5/40 45/56-15/20 45/56-5/60 45/56-25/20 45/56-35/20