Subtract 56/45 from 45/40
1st number: 1 5/40, 2nd number: 1 11/45
45/40 - 56/45 is -43/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
56/45 = 56 × 8/45 × 8 = 448/360 - Subtract the two like fractions:
405/360 - 448/360 = 405 - 448/360 = -43/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-56/45 45/80-56/45 45/40-56/90