Subtract 49/10 from 21/24
1st number: 21/24, 2nd number: 4 9/10
21/24 - 49/10 is -161/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 10 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Likewise, for the 2nd fraction, since 10 × 12 = 120,
49/10 = 49 × 12/10 × 12 = 588/120 - Subtract the two like fractions:
105/120 - 588/120 = 105 - 588/120 = -483/120 - After reducing the fraction, the answer is -161/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-49/10 21/24-98/10 21/48-49/10 21/24-49/20 63/24-49/10 21/72-49/10 21/24-49/30 21/24-49/50 21/24-49/70