Subtract 7/56 from 21/2
1st number: 10 1/2, 2nd number: 7/56
21/2 - 7/56 is 83/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 2 × 28 = 56,
21/2 = 21 × 28/2 × 28 = 588/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
7/56 = 7 × 1/56 × 1 = 7/56 - Subtract the two like fractions:
588/56 - 7/56 = 588 - 7/56 = 581/56 - After reducing the fraction, the answer is 83/8
- In mixed form: 103/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-7/56 21/2-14/56 21/4-7/56 63/2-7/56 21/2-21/56 21/6-7/56 21/2-35/56 21/10-7/56 21/2-49/56 21/14-7/56