Subtract 5/40 from 28/54
28/54 - 5/40 is 85/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
28/54 = 28 × 20/54 × 20 = 560/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
5/40 = 5 × 27/40 × 27 = 135/1080 - Subtract the two like fractions:
560/1080 - 135/1080 = 560 - 135/1080 = 425/1080 - After reducing the fraction, the answer is 85/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54-5/40 28/54-10/40 28/54-5/80 84/54-5/40 28/54-15/40 28/54-25/40 28/54-35/40