Subtract 4/56 from 45/21
1st number: 2 3/21, 2nd number: 4/56
45/21 - 4/56 is 29/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
45/21 = 45 × 8/21 × 8 = 360/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
4/56 = 4 × 3/56 × 3 = 12/168 - Subtract the two like fractions:
360/168 - 12/168 = 360 - 12/168 = 348/168 - After reducing the fraction, the answer is 29/14
- In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21-4/56 45/21-8/56 45/42-4/56 45/21-12/56 45/63-4/56 45/21-20/56 45/21-28/56