Subtract 70/81 from 75/5
1st number: 15 0/5, 2nd number: 70/81
75/5 - 70/81 is 1145/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
75/5 = 75 × 81/5 × 81 = 6075/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
70/81 = 70 × 5/81 × 5 = 350/405 - Subtract the two like fractions:
6075/405 - 350/405 = 6075 - 350/405 = 5725/405 - After reducing the fraction, the answer is 1145/81
- In mixed form: 1411/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/10-70/81 75/15-70/81 75/25-70/81 75/35-70/81