Subtract 56/20 from 45/4
1st number: 11 1/4, 2nd number: 2 16/20
45/4 - 56/20 is 169/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
45/4 = 45 × 5/4 × 5 = 225/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
56/20 = 56 × 1/20 × 1 = 56/20 - Subtract the two like fractions:
225/20 - 56/20 = 225 - 56/20 = 169/20 - In mixed form: 89/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-56/20 45/8-56/20 45/4-56/40 45/12-56/20 45/4-56/60 45/20-56/20 45/28-56/20