Subtract 90/24 from 3/15
1st number: 3/15, 2nd number: 3 18/24
3/15 - 90/24 is -71/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
3/15 = 3 × 8/15 × 8 = 24/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Subtract the two like fractions:
24/120 - 450/120 = 24 - 450/120 = -426/120 - After reducing the fraction, the answer is -71/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-90/24 3/30-90/24 3/15-90/48 9/15-90/24 3/45-90/24 3/15-90/72 3/75-90/24 21/15-90/24