Subtract 56/36 from 45/40
1st number: 1 5/40, 2nd number: 1 20/36
45/40 - 56/36 is -31/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 36 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 36 × 10 = 360,
56/36 = 56 × 10/36 × 10 = 560/360 - Subtract the two like fractions:
405/360 - 560/360 = 405 - 560/360 = -155/360 - After reducing the fraction, the answer is -31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-56/36 45/80-56/36 45/40-56/72