Subtract 21/90 from 63/24
1st number: 2 15/24, 2nd number: 21/90
63/24 - 21/90 is 287/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
63/24 = 63 × 15/24 × 15 = 945/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Subtract the two like fractions:
945/360 - 84/360 = 945 - 84/360 = 861/360 - After reducing the fraction, the answer is 287/120
- In mixed form: 247/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/24-42/90 63/48-21/90 63/24-63/90 63/72-21/90