Subtract 28/54 from 7/36
7/36 - 28/54 is -35/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
7/36 = 7 × 3/36 × 3 = 21/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
28/54 = 28 × 2/54 × 2 = 56/108 - Subtract the two like fractions:
21/108 - 56/108 = 21 - 56/108 = -35/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/36-28/54 7/36-56/54 7/72-28/54 21/36-28/54 7/36-84/54 35/36-28/54 49/36-28/54