Subtract 8/72 from 15/8
1st number: 1 7/8, 2nd number: 8/72
15/8 - 8/72 is 127/72.
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,
15/8 = 15 × 9/8 × 9 = 135/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
8/72 = 8 × 1/72 × 1 = 8/72 - Subtract the two like fractions:
135/72 - 8/72 = 135 - 8/72 = 127/72 - In mixed form: 155/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/8-8/72 15/8-16/72 15/16-8/72 45/8-8/72 15/8-24/72 15/24-8/72 75/8-8/72 15/8-40/72 15/40-8/72 15/8-56/72 15/56-8/72