Subtract 7/56 from 45/20
1st number: 2 5/20, 2nd number: 7/56
45/20 - 7/56 is 17/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
45/20 = 45 × 14/20 × 14 = 630/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
7/56 = 7 × 5/56 × 5 = 35/280 - Subtract the two like fractions:
630/280 - 35/280 = 630 - 35/280 = 595/280 - After reducing the fraction, the answer is 17/8
- In mixed form: 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-7/56 45/20-14/56 45/40-7/56 45/20-21/56 45/60-7/56 45/20-35/56 45/20-49/56