Subtract 30/28 from 56/81
1st number: 56/81, 2nd number: 1 2/28
56/81 - 30/28 is -431/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 28 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
56/81 = 56 × 28/81 × 28 = 1568/2268 - Likewise, for the 2nd fraction, since 28 × 81 = 2268,
30/28 = 30 × 81/28 × 81 = 2430/2268 - Subtract the two like fractions:
1568/2268 - 2430/2268 = 1568 - 2430/2268 = -862/2268 - After reducing the fraction, the answer is -431/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/81-60/28 56/81-30/56 56/81-90/28 56/81-30/84