Subtract 56/9 from 81/50
1st number: 1 31/50, 2nd number: 6 2/9
81/50 - 56/9 is -2071/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
81/50 = 81 × 9/50 × 9 = 729/450 - Likewise, for the 2nd fraction, since 9 × 50 = 450,
56/9 = 56 × 50/9 × 50 = 2800/450 - Subtract the two like fractions:
729/450 - 2800/450 = 729 - 2800/450 = -2071/450
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50-56/18 81/50-56/27 81/50-56/45 81/50-56/63