Subtract 81/14 from 16/20
1st number: 16/20, 2nd number: 5 11/14
16/20 - 81/14 is -349/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
16/20 = 16 × 7/20 × 7 = 112/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
81/14 = 81 × 10/14 × 10 = 810/140 - Subtract the two like fractions:
112/140 - 810/140 = 112 - 810/140 = -698/140 - After reducing the fraction, the answer is -349/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/20-81/14 16/40-81/14 16/20-81/28 48/20-81/14 16/60-81/14 16/20-81/42 80/20-81/14 16/20-81/70 16/20-81/98