Subtract 15/8 from 90/15
1st number: 6 0/15, 2nd number: 1 7/8
90/15 - 15/8 is 33/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
90/15 = 90 × 8/15 × 8 = 720/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120 - Subtract the two like fractions:
720/120 - 225/120 = 720 - 225/120 = 495/120 - 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: 90/15-30/8 90/30-15/8 90/15-15/16 90/15-45/8 90/45-15/8 90/15-15/24 90/15-75/8 90/75-15/8 90/15-15/40 90/15-15/56