Subtract 40/14 from 81/4
1st number: 20 1/4, 2nd number: 2 12/14
81/4 - 40/14 is 487/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 14 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
81/4 = 81 × 7/4 × 7 = 567/28 - Likewise, for the 2nd fraction, since 14 × 2 = 28,
40/14 = 40 × 2/14 × 2 = 80/28 - Subtract the two like fractions:
567/28 - 80/28 = 567 - 80/28 = 487/28 - In mixed form: 1711/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4-80/14 81/8-40/14 81/4-40/28 81/12-40/14 81/4-40/42 81/20-40/14 81/4-40/70 81/28-40/14 81/4-40/98