Subtract 6/15 from 30/8
1st number: 3 6/8, 2nd number: 6/15
30/8 - 6/15 is 67/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
30/8 = 30 × 15/8 × 15 = 450/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
6/15 = 6 × 8/15 × 8 = 48/120 - Subtract the two like fractions:
450/120 - 48/120 = 450 - 48/120 = 402/120 - After reducing the fraction, the answer is 67/20
- In mixed form: 37/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8-6/15 30/8-12/15 30/16-6/15 30/8-6/30 90/8-6/15 30/8-18/15 30/24-6/15 30/8-6/45 30/8-30/15 30/40-6/15 30/8-6/75 30/8-42/15 30/56-6/15