Subtract 1/20 from 72/5
1st number: 14 2/5, 2nd number: 1/20
72/5 - 1/20 is 287/20.
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,
1/20 = 1 × 1/20 × 1 = 1/20 - Subtract the two like fractions:
288/20 - 1/20 = 288 - 1/20 = 287/20 - In mixed form: 147/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5-2/20 72/10-1/20 72/5-1/40 72/5-3/20 72/15-1/20 72/5-1/60 72/5-5/20 72/25-1/20 72/5-7/20 72/35-1/20