Subtract 1/81 from 4/28
4/28 - 1/81 is 74/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
4/28 = 4 × 81/28 × 81 = 324/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
1/81 = 1 × 28/81 × 28 = 28/2268 - Subtract the two like fractions:
324/2268 - 28/2268 = 324 - 28/2268 = 296/2268 - After reducing the fraction, the answer is 74/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28-1/81 4/28-2/81 4/56-1/81 12/28-1/81 4/28-3/81 4/84-1/81 20/28-1/81 4/28-5/81 4/28-7/81