Subtract 49/56 from 28/63
28/63 - 49/56 is -31/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
28/63 = 28 × 8/63 × 8 = 224/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
49/56 = 49 × 9/56 × 9 = 441/504 - Subtract the two like fractions:
224/504 - 441/504 = 224 - 441/504 = -217/504 - After reducing the fraction, the answer is -31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63-49/56 28/63-98/56 84/63-49/56