Subtract 75/70 from 81/14
1st number: 5 11/14, 2nd number: 1 5/70
81/14 - 75/70 is 33/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
81/14 = 81 × 5/14 × 5 = 405/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
75/70 = 75 × 1/70 × 1 = 75/70 - Subtract the two like fractions:
405/70 - 75/70 = 405 - 75/70 = 330/70 - After reducing the fraction, the answer is 33/7
- In mixed form: 45/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28-75/70 81/42-75/70 81/70-75/70 81/98-75/70