Subtract 9/20 from 72/5
1st number: 14 2/5, 2nd number: 9/20
72/5 - 9/20 is 279/20.
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,
72/5 = 72 × 4/5 × 4 = 288/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
9/20 = 9 × 1/20 × 1 = 9/20 - Subtract the two like fractions:
288/20 - 9/20 = 288 - 9/20 = 279/20 - In mixed form: 1319/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5-18/20 72/10-9/20 72/5-9/40 72/5-27/20 72/15-9/20 72/5-9/60 72/5-45/20 72/25-9/20 72/5-63/20 72/35-9/20