Subtract 63/24 from 90/20
1st number: 4 10/20, 2nd number: 2 15/24
90/20 - 63/24 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
90/20 = 90 × 6/20 × 6 = 540/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
63/24 = 63 × 5/24 × 5 = 315/120 - Subtract the two like fractions:
540/120 - 315/120 = 540 - 315/120 = 225/120 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-63/24 90/20-63/48 90/60-63/24 90/20-63/72