Subtract 28/7 from 20/56
1st number: 20/56, 2nd number: 4 0/7
20/56 - 28/7 is -51/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
20/56 = 20 × 1/56 × 1 = 20/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
28/7 = 28 × 8/7 × 8 = 224/56 - Subtract the two like fractions:
20/56 - 224/56 = 20 - 224/56 = -204/56 - After reducing the fraction, the answer is -51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56-28/7 20/56-56/7 20/56-28/14 60/56-28/7 20/56-84/7 20/56-28/21 20/56-28/35 20/56-28/49