Subtract 81/8 from 56/45
1st number: 1 11/45, 2nd number: 10 1/8
56/45 - 81/8 is -3197/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
56/45 = 56 × 8/45 × 8 = 448/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
81/8 = 81 × 45/8 × 45 = 3645/360 - Subtract the two like fractions:
448/360 - 3645/360 = 448 - 3645/360 = -3197/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90-81/8 56/45-81/16 56/45-81/24 56/45-81/40 56/45-81/56