Subtract 63/45 from 28/56
1st number: 28/56, 2nd number: 1 18/45
28/56 - 63/45 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
28/56 = 28 × 45/56 × 45 = 1260/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
63/45 = 63 × 56/45 × 56 = 3528/2520 - Subtract the two like fractions:
1260/2520 - 3528/2520 = 1260 - 3528/2520 = -2268/2520 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56-63/90 84/56-63/45