Subtract 63/40 from 28/24
1st number: 1 4/24, 2nd number: 1 23/40
28/24 - 63/40 is -49/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
28/24 = 28 × 5/24 × 5 = 140/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Subtract the two like fractions:
140/120 - 189/120 = 140 - 189/120 = -49/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/24-63/40 28/48-63/40 28/24-63/80 84/24-63/40 28/72-63/40