Subtract 81/80 from 3/14
1st number: 3/14, 2nd number: 1 1/80
3/14 - 81/80 is -447/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 14 × 40 = 560,
3/14 = 3 × 40/14 × 40 = 120/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Subtract the two like fractions:
120/560 - 567/560 = 120 - 567/560 = -447/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/14-81/80 3/28-81/80 9/14-81/80 3/42-81/80 15/14-81/80 3/70-81/80 21/14-81/80 3/98-81/80