Subtract 81/14 from 45/80
1st number: 45/80, 2nd number: 5 11/14
45/80 - 81/14 is -585/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 14 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Likewise, for the 2nd fraction, since 14 × 40 = 560,
81/14 = 81 × 40/14 × 40 = 3240/560 - Subtract the two like fractions:
315/560 - 3240/560 = 315 - 3240/560 = -2925/560 - After reducing the fraction, the answer is -585/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80-81/14 45/80-81/28 45/80-81/42 45/80-81/70 45/80-81/98