Subtract 5/72 from 30/8
1st number: 3 6/8, 2nd number: 5/72
30/8 - 5/72 is 265/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
30/8 = 30 × 9/8 × 9 = 270/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
5/72 = 5 × 1/72 × 1 = 5/72 - Subtract the two like fractions:
270/72 - 5/72 = 270 - 5/72 = 265/72 - In mixed form: 349/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8-5/72 30/8-10/72 30/16-5/72 90/8-5/72 30/8-15/72 30/24-5/72 30/8-25/72 30/40-5/72 30/8-35/72 30/56-5/72