Subtract 49/20 from 18/24
1st number: 18/24, 2nd number: 2 9/20
18/24 - 49/20 is -17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Likewise, for the 2nd fraction, since 20 × 6 = 120,
49/20 = 49 × 6/20 × 6 = 294/120 - Subtract the two like fractions:
90/120 - 294/120 = 90 - 294/120 = -204/120 - After reducing the fraction, the answer is -17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24-49/20 18/24-98/20 18/48-49/20 18/24-49/40 54/24-49/20 18/72-49/20 18/24-49/60 90/24-49/20