Subtract 81/56 from 50/40
1st number: 1 10/40, 2nd number: 1 25/56
50/40 - 81/56 is -11/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
50/40 = 50 × 7/40 × 7 = 350/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
81/56 = 81 × 5/56 × 5 = 405/280 - Subtract the two like fractions:
350/280 - 405/280 = 350 - 405/280 = -55/280 - After reducing the fraction, the answer is -11/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/80-81/56