Subtract 15/8 from 30/5
1st number: 6 0/5, 2nd number: 1 7/8
30/5 - 15/8 is 33/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
30/5 = 30 × 8/5 × 8 = 240/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
15/8 = 15 × 5/8 × 5 = 75/40 - Subtract the two like fractions:
240/40 - 75/40 = 240 - 75/40 = 165/40 - After reducing the fraction, the answer is 33/8
- In mixed form: 41/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/5-15/8 30/5-30/8 30/10-15/8 30/5-15/16 90/5-15/8 30/5-45/8 30/15-15/8 30/5-15/24 30/5-75/8 30/25-15/8 30/5-15/40 30/35-15/8 30/5-15/56