Subtract 56/45 from 18/28
1st number: 18/28, 2nd number: 1 11/45
18/28 - 56/45 is -379/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
18/28 = 18 × 45/28 × 45 = 810/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
56/45 = 56 × 28/45 × 28 = 1568/1260 - Subtract the two like fractions:
810/1260 - 1568/1260 = 810 - 1568/1260 = -758/1260 - After reducing the fraction, the answer is -379/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-56/45 18/56-56/45 18/28-56/90 54/28-56/45 18/84-56/45 90/28-56/45