Subtract 7/45 from 4/54
4/54 - 7/45 is -11/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 45 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
4/54 = 4 × 5/54 × 5 = 20/270 - Likewise, for the 2nd fraction, since 45 × 6 = 270,
7/45 = 7 × 6/45 × 6 = 42/270 - Subtract the two like fractions:
20/270 - 42/270 = 20 - 42/270 = -22/270 - After reducing the fraction, the answer is -11/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/54-7/45 4/54-14/45 4/54-7/90 12/54-7/45 4/54-21/45 20/54-7/45 4/54-35/45 28/54-7/45 4/54-49/45