Subtract 7/20 from 45/5
1st number: 9 0/5, 2nd number: 7/20
45/5 - 7/20 is 173/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
45/5 = 45 × 4/5 × 4 = 180/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
7/20 = 7 × 1/20 × 1 = 7/20 - Subtract the two like fractions:
180/20 - 7/20 = 180 - 7/20 = 173/20 - In mixed form: 813/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-7/20 45/5-14/20 45/10-7/20 45/5-7/40 45/5-21/20 45/15-7/20 45/5-7/60 45/5-35/20 45/25-7/20 45/5-49/20 45/35-7/20