Subtract 45/54 from 7/36
7/36 - 45/54 is -23/36.
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,
45/54 = 45 × 2/54 × 2 = 90/108 - Subtract the two like fractions:
21/108 - 90/108 = 21 - 90/108 = -69/108 - After reducing the fraction, the answer is -23/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/36-45/54 7/36-90/54 7/72-45/54 21/36-45/54 35/36-45/54 49/36-45/54