Subtract 28/27 from 45/60
1st number: 45/60, 2nd number: 1 1/27
45/60 - 28/27 is -31/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 60 × 9 = 540,
45/60 = 45 × 9/60 × 9 = 405/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
28/27 = 28 × 20/27 × 20 = 560/540 - Subtract the two like fractions:
405/540 - 560/540 = 405 - 560/540 = -155/540 - After reducing the fraction, the answer is -31/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60-28/27 45/60-56/27 45/60-28/54 45/60-84/27 45/60-28/81