Subtract 5/18 from 72/5
1st number: 14 2/5, 2nd number: 5/18
72/5 - 5/18 is 1271/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
72/5 = 72 × 18/5 × 18 = 1296/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
5/18 = 5 × 5/18 × 5 = 25/90 - Subtract the two like fractions:
1296/90 - 25/90 = 1296 - 25/90 = 1271/90 - In mixed form: 1411/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5-10/18 72/10-5/18 72/5-5/36 72/5-15/18 72/15-5/18 72/5-5/54 72/5-25/18 72/25-5/18 72/5-5/90 72/5-35/18 72/35-5/18