Subtract 1/72 from 7/54
7/54 - 1/72 is 25/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
7/54 = 7 × 4/54 × 4 = 28/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
1/72 = 1 × 3/72 × 3 = 3/216 - Subtract the two like fractions:
28/216 - 3/216 = 28 - 3/216 = 25/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54-1/72 7/54-2/72 21/54-1/72 7/54-3/72 35/54-1/72 7/54-5/72 49/54-1/72 7/54-7/72