Subtract 81/14 from 42/5
1st number: 8 2/5, 2nd number: 5 11/14
42/5 - 81/14 is 183/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
42/5 = 42 × 14/5 × 14 = 588/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
81/14 = 81 × 5/14 × 5 = 405/70 - Subtract the two like fractions:
588/70 - 405/70 = 588 - 405/70 = 183/70 - In mixed form: 243/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-81/14 42/10-81/14 42/5-81/28 42/15-81/14 42/5-81/42 42/25-81/14 42/5-81/70 42/35-81/14 42/5-81/98