Subtract 49/56 from 15/20
15/20 - 49/56 is -1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
15/20 = 15 × 14/20 × 14 = 210/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
49/56 = 49 × 5/56 × 5 = 245/280 - Subtract the two like fractions:
210/280 - 245/280 = 210 - 245/280 = -35/280 - After reducing the fraction, the answer is -1/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-49/56 15/20-98/56 15/40-49/56 45/20-49/56 15/60-49/56 75/20-49/56