Subtract 5/4 from 72/15
1st number: 4 12/15, 2nd number: 1 1/4
72/15 - 5/4 is 71/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
5/4 = 5 × 15/4 × 15 = 75/60 - Subtract the two like fractions:
288/60 - 75/60 = 288 - 75/60 = 213/60 - After reducing the fraction, the answer is 71/20
- In mixed form: 311/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15-10/4 72/30-5/4 72/15-5/8 72/15-15/4 72/45-5/4 72/15-5/12 72/15-25/4 72/75-5/4 72/15-5/20 72/15-35/4 72/15-5/28